Python

A Deep Dive into Machine Learning Algorithms

Machine learning algorithms are the backbone of modern artificial intelligence. They enable computers to learn and make predictions or decisions without being explicitly programmed.

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How to Programmatically get Amazon IP Ranges/CIDRs

Amazon Web Services (AWS) operates an extensive network infrastructure with a vast number of IP addresses and CIDR blocks.

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Programming Languages Series

1. Introduction Welcome to our Programming Languages Series! In this series, we’ll explore various programming languages, understand their purposes, provide code examples, and discuss when to use each one.

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How to add Payment Subscriptions with Stripe in Django

Integrating Stripe subscriptions into your Django site involves several steps. Here’s a high-level overview of the process.

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[Solved] A Number After a Double Reversal in Python

The problem Reversing an integer means to reverse all its digits.

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Nature-Inspired Problem Solving: Genetic Algorithms

Introduction Genetic Algorithms (GAs) and Evolutionary Computation (EC) are powerful optimization techniques inspired by the process of natural selection and evolution.

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Python Dynamic Programming: Mastering Optimization

Introduction Dynamic programming is a powerful algorithmic technique that allows developers to tackle complex problems efficiently.

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Python Reflection & Metaprogramming: Advanced Power

Introduction Python is a versatile programming language that offers powerful features and capabilities.

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Python Context Managers Mastery: Resource Management

Introduction Python context managers provide a convenient and reliable way to manage resources and ensure proper setup and teardown actions.

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Python Decorators Mastery: Advanced Usage Guide

Introduction Python decorators are a powerful feature that allows you to modify the behavior of functions or classes dynamically.

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Python's Yield Mastery: Advanced Usage Guide

Introduction Python’s yield statement is a powerful feature that allows you to create generator functions.

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Python: Unleashing the Power of Simplicity and Versatility

Getting Started with Python Python is a versatile and popular programming language known for its simplicity and readability.

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Python's Advanced Features: Empowering Programmers

Introduction: In the vast realm of programming, Python stands tall as a language that caters to developers of all levels.

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Python's Yield: Unleashing Generator Magic

Introduction Python, being a versatile language, offers numerous tools and features to streamline our coding experience.

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Python vs Java Performance: Programming Powerhouses

In the vast landscape of programming languages, Python and Java have emerged as titans, offering robust solutions for a wide range of applications.

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Teach me the Basics of Data Science in Python

An overview of Data Science in Python This is an overview of the basics of data science in Python.

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How to Generate Terraform using Python

To generate Terraform code using Python, you can utilize the power of the language and various libraries to dynamically create and manipulate the Terraform configuration files.

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Create DynamoDB Table & Add Items using Python 3 from Lambda

To create a DynamoDB table and add items to it using Python 3 from AWS Lambda, you can use the AWS SDK for Python, also known as Boto3.

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How to create a Site-to-Site VPN in Boto3 Python

To create a site-to-site VPN using the Boto3 library in Python, you can utilize the boto3.

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Golang vs Python: The Ultimate Battle in DevOps

In the world of DevOps, two programming languages are often pitted against each other: Golang and Python.

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Why DevOps and Python are Amazing Together

In today’s software development world, DevOps and Python are two of the most essential elements for building high-quality software.

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Python & DevOps: Transforming Software Development

Introduction: In recent years, the software industry has witnessed a remarkable shift towards DevOps and Python.

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How to Learn Recursion by Example in Python

Here’s an example code in Python that demonstrates recursion: def factorial(n): if n == 0: return 1 else: return n * factorial(n-1) print(factorial(5)) # Output: 120 This code defines a function factorial that calculates the factorial of a given number n.

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What is the Zen of Python?

The Zen of Python is an Easter Egg that long time Pythoneer (Tim Peters) channeled the guiding principals for the language’s design principals into 20 aphorisms, of which only 19 of them are written down.

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How to Create a Password Generator in C++

You can easily create a password generator in C++ with the following simple method.

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How to read user input as numbers in Python

In Python 3 onwards, the input function returns a string type.

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Capitalize First Letter of Each Word in Python

If you have a sentence containing multiple words, and you want each of the words to start with a capital letter, then you can do one of the following:

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How to Create a Password Generator in Python

You can easily create a password generator in Python with the following simple method.

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How to Convert Bytes to a String in Python

If you need to convert bytes to a string in Python, then you can do the following:

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How to measure the elapsed time in Python

Option 1 - using the time module import time start = time.

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How to get the SHA512 sum of a string using Python

If you need to get the SHA512 sum of a string using Python, then you can do the following.

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How to get the SHA256 sum of a string using Python

If you need to get the SHA256 sum of a string using Python, then you can do the following.

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How to get the MD5 sum of a string using Python

If you need to get the MD5 sum of a string using Python, then you can do the following.

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[Solved] TypeError: datetime Not JSON Serializable

If you get the following error: TypeError: Object of type datetime is not JSON serializable

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Zip & Encode Dict to String & Back in Python

If you have a Python dictionary, and want to encode it as a string and zip it to save space, perhaps for passing a dictionary through as an environment variable or similar, then you can do the following

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How to Generate a Random Number between 2 numbers in Python

If you need to generate a random number between two (2) numbers in Python, then you can make use of the random module.

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How to find the Product of Consecutive Fib Numbers in Python

0, 0, 1, 0, 2, 0, 2, 2, 1, 6, 0, 5, 0, 2, 6, 5, 4, 0, 5, 3, 0, 3, …

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How to Solve Van Eck's Sequence in Python

0, 0, 1, 0, 2, 0, 2, 2, 1, 6, 0, 5, 0, 2, 6, 5, 4, 0, 5, 3, 0, 3, …

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How to Solve: Help the Bookseller Challenge in Python

A bookseller has lots of books classified in 26 categories labeled A, B, … Z.

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How to Find the Stray Number in Python

The challenge You are given an odd-length array of integers, in which all of them are the same, except for one single number.

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How to Empty and Delete an S3 Bucket using the AWS CLI

Option 1 – Using AWS CLI Step 1 export bucketname='your-bucket-here' Step 2

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How to Calculate Variance in Python

If you need to calculate variance in Python, then you can do the following.

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How to Calculate the Sum of a List in Python

If you need to calculate and get the sum of a list in Python, then you can do the following.

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How to add a List to a Set in Python

If you need to add a list to a set in Python, then you can do the following:

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How to Remove Punctuation from a List in Python

If you have a Python list, and want to remove all punctuation, then you can do the following:

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How to Normalize a List of Numbers in Python

If you need to normalize a list of numbers in Python, then you can do the following:

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How to Multiply a List by a Scalar in Python

If you need to multiply a list by a scalar in Python, then you can do one of the following:

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How to Find the Index of the Minimum Element in a List in Python

If you need to find the index of the minimum element in a list, you can do one of the following:

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How to Convert a Set to a String in Python

If you need to convert a set to a string in Python, then you can do one of the following:

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How to Create Zip Archive of Directory in Python

If you need to create a zip of a directory using Python, then you can do the following:

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How to Print Multiple Arguments in Python

If you need to print out multiple arguments using Python, then you can do one of the following:

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How to Parallelize a for Loop in Python

If you need to run a for loop in parallel, then you can do one of the following:

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How to Reverse an Integer in Python

If you need to reverse an integer using Python, then you can do the following:

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How to Save a Python Dictionary to a File in Python

If you need to save a Python Dictionary object type to a file using Python, then you can do one of the following:

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How to Move Files From One Directory to Another Using Python

If you need to move files from one directory to another directory, using Python, then you can do one of the following:

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How to Get the Number of Lines in a File in Python

If you need to get the number of lines in a file, or the line count total from a file, using Python, then you can use one of the following options:

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How to Read Specific Lines From a File in Python

If you need to read a specific line from a file using Python, then you can use one of the following options:

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How to Get All Files in a Directory in Python

If you need to get all the files in a directory using Python, then you can do the following:

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How to Check Operating System in Python

If you need to check the Operating System information from Python, then you can do one of the following:

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How to Convert Hex to Byte in Python

If you need to convert Hex to Byte in Python, then you can do one of the following:

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How to get Python logger to Print to std out

If you use Python’s logger as follows: import logging logger = logging.

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How to append to an Array in Elasticsearch using elasticsearch-py

If you are using the Official ElasticSearch Python library (Docs), and you want to create an index:

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How to Copy Text to the Clipboard in Python

If you need to Copy Text to the Clipboard using your Python application code, then you can do the following:

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How to Read a PDF file in Python

If you need to read a PDF (Portable Document Format) file in your Python code, then you can do the following:

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How to Convert HEX to RBG in Python

If you need to convert HEX (Hexadecimal) to RGB (Red-Green-Blue) in your Python code, then you can do the following:

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How to Refer to a Null Object in Python

If you need to refer to a Null Object in your Python code, then you can do the following.

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How to Convert Bytearray to String in Python

If you need to convert a Bytearray to a String in Python, then you can do the following:

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How to get the Hostname in Python

If you need to get the Hostname in your Python application, then you can do the following:

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How to get the IP Address in Python

If you need to get the IP Address in your Python application, then you can do the following:

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How to use SSH in your Python application

If you need to make an SSH connection and issues commands over SSH using your Python application, then you can do the following:

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How to Pause a Program in Python

If you need to pause the execution of your Python program, then you can do the following:

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How to Convert String to Double in Python

If you need to convert a String to a Double in your Python code:

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How to a Run Bash Command in Python

If you need to run a bash command in your Python code, then you can do the following:

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How to List all Files/Folders/Directories in Python

If you need to list all Files, Folders, or Directories in Python code, then you can use the listdirs method from the os package.

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How to Read a File in Python

If you need to read a file in Python, then you can use the open() built-in function to help you.

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How to Drop Columns in Pandas Only If Exists

If you have a Pandas DataFrame, and want to only drop columns if they exist, then you can do the following:

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How to Join Multiple MySQL Tables in Python

First, you will need the mysql.connector. If you are unsure of how to get this setup, refer to How to Install MySQL Driver in Python .

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How to Limit a MySQL Query in Python

First, you will need the mysql.connector. If you are unsure of how to get this setup, refer to How to Install MySQL Driver in Python .

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How to Update a MySQL Table in Python

First, you will need the mysql.connector. If you are unsure of how to get this setup, refer to How to Install MySQL Driver in Python .

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How to Drop a MySQL Table in Python

First, you will need the mysql.connector. If you are unsure of how to get this setup, refer to How to Install MySQL Driver in Python .

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How to Delete MySQL Records in Python

First, you will need the mysql.connector. If you are unsure of how to get this setup, refer to How to Install MySQL Driver in Python .

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How to ORDER BY a MySQL Query in Python

First, you will need the mysql.connector. If you are unsure of how to get this setup, refer to How to Install MySQL Driver in Python .

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How to Filter WHERE MySQL Queries in Python

First, you will need the mysql.connector. If you are unsure of how to get this setup, refer to How to Install MySQL Driver in Python .

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How to Select From MySQL in Python

First, you will need the mysql.connector. If you are unsure of how to get this setup, refer to How to Install MySQL Driver in Python .

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How to Insert into a MySQL Table in Python

If you need to insert data into a MySQL table using Python, then look no further.

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How to Create a Primary Key for a MySQL Database in Python

You can create a Primary Key for your MySQL database in Python as follows.

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How to Create a MySQL Table in Python

If you need to create a table in a MySQL database using Python, then you can do the following.

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How to Create a MySQL Database in Python

In order to create a MySQL database in Python, you first need to initiate a connection using the mysql.

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How to Install MySQL Driver in Python

To begin using MySQL in Python, you need to do the following:

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What are the multiples of 3 from 1 to 1000

If you need to calculate the multiples of 3, starting from 1 up until 1000, then you can use the following code:

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How to Disable Warning with Python Pandas

How can python pandas disable warnings? If you need to disable warnings with Pandas on Python, then you can use the warnings module and ignore the filter as follows:

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How to Get all Caps Alphabet as List in Python

If we take the following list: ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'] How do we extract only the UpperCase letters of a given word?

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How to create an AWS Lambda in Terraform

Step 1 – Lambda Code in Python The following code expects a python file with the contents as follows in a file called python/script1.

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How to Generate Random Strings with Dash in-between in Python

If you need to generate a random string that looks something like this: VUNBXJ-230411, then you can use the following random generator:

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How to create a Countdown Timer in Python

If you need to count down a specific amount of time, say for example, when a token is set to expire, then a countdown timer will be useful.

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How to Print to stdout in Flask using Python

If you are trying to print() to the console/stdout in your Flask app, but nothing is happening, then you just need to flush your prints, as follows:

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How to Dockerize a Flask App

If you have a Flask app that you would like packaged in a Docker container, then you can do the following.

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How to Generate a Random String in Python

Python gives the ability to generate random strings out of the box, by using a combination of the string and random modules.

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Determining Integer Depth in Python

The challenge The depth of an integer n is defined to be how many multiples of n it is necessary to compute before all 10 digits have appeared at least once in some multiple.

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How to Reverse a singly-linked list in Python

The challenge Implement a function reverse_list that takes a singly-linked list of nodes and returns a matching list in the reverse order.

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Calculating Simple Time Difference in Python

The challenge In this challenge, you will be given a series of times at which an alarm goes off.

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Calculating Odd/Even number of divisors in Python

The challenge Given an integer n return "odd" if the number of its divisors is odd.

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Calculate possibilities of throwing a coin N times in Python

The challenge In this challenge, you will be given an integer n, which is the number of times that is thrown a coin.

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How to Convert Integer to Whitespace format in Python

The challenge Hereinafter, [space] refers to " ", [tab] refers to "\t", and [LF] refers to "\n" for illustrative purposes.

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How to Perform Frog Jumping in Python

The challenge You have an array of integers and have a frog at the first position

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How to Calculate the area of a regular N sides polygon inside a circle of radius R in Python

The challenge Write the following function: def area_of_polygon_inside_circle(circle_radius, number_of_sides): It should calculate the area of a regular polygon of numberOfSides, number-of-sides, or number_of_sides sides inside a circle of radius circleRadius, circle-radius, or circle_radius which passes through all the vertices of the polygon (such a circle is called circumscribed circle or circumcircle).

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How to create an Image Host Filename Generator in Python

The challenge You are developing an image hosting website. You have to create a function for generating random and unique image filenames.

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How to Find the Missing Alphabets in Python

The challenge Task Given string s, which contains only letters from a to z in lowercase.

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How to Find the Longest Substring in Alphabetical Order in Python

The challenge Find the longest substring in alphabetical order. Example:

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How to Binary to Text (ASCII) Conversion in Python

The challenge Write a function that takes in a binary string and returns the equivalent decoded text (the text is ASCII encoded).

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How to Find the Row of the Odd Triangle in Python

The challenge Given a triangle of consecutive odd numbers: 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 .

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Solving Number Zoo Patrol in Python

The challenge Write a function that takes a shuffled list of unique numbers from 1 to n with one element missing (which can be any number including n).

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How to Round up to the Next Multiple of 5 in Python

The challenge Given an integer as input, can you round it to the next (meaning, “higher”) multiple of 5?

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How to satisfy Wilson Primes in Python

The challenge Wilson primes satisfy the following condition. Let P represent a prime number.

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Writing a Sleigh Authentication in Python

The challenge Christmas is coming and many people dreamed of having a ride with Santa’s sleigh.

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Solving for Multiple of Index in Python

The challenge Return a new array consisting of elements which are multiple of their own index in input array (length > 1).

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How to Find an item’s Alphabet Position in Python

The challenge When provided with a letter, return its position in the alphabet.

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How to write a Lazy Repeater Helper in Python

The challenge The make_looper() function takes a string (of non-zero length) as an argument.

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How to write a String Case Conversion Helper in Python

The challenge In this challenge, you will make a function that converts between camelCase, snake_case, and kebab-case.

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How to create Interleaving Arrays in Python

The challenge Create a function, that accepts an arbitrary number of arrays and returns a single array generated by alternately appending elements from the passed-in arguments.

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How to Find the Largest product in a Series in Python

The challenge Complete the greatestProduct method so that it’ll find the greatest product of five consecutive digits in the given string of digits.

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How to Calculate the Least Common Multiple in Python

The challenge Write a function that calculates the least common multiple of its arguments; each argument is assumed to be a non-negative integer.

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How to Solve Caesar Cipher Helper in Python

The challenge Write a class that, when given a string, will return an uppercase string with each letter shifted forward in the alphabet by however many spots the cipher was initialized to.

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How to Write Out Numbers in Python

The challenge Create a function that transforms any positive number to a string representing the number in words.

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How to do Base64 Encoding in Python

The challenge Create a function that converts the value of the String to and from Base64 using the ASCII character set.

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How to Find the Unique String in Python

The challenge There is an array of strings. All strings contain similar letters except one.

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How to convert a PascalCase string into snake_case in Python

The challenge Complete the function/method so that it takes a PascalCase string and returns the string in snake_case notation.

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How to Convert a Hex String to RGB in Python

The challenge When working with color values it can sometimes be useful to extract the individual red, green, and blue (RGB) component values for a color.

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How to Create a Hashtag Generator in Python

The challenge Write a hashtag generator function that takes a string and returns a #HashCodeString of it.

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How to Move Zeros to the End in Python

The challenge Write an algorithm that takes an array and moves all of the zeros to the end, preserving the order of the other elements.

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Regex for Gregorian Date Validation in Python

The challenge Write a regular expression that validates the gregorian date in the format “DD.

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How to Create Your Own Python Split Function

The challenge Write your own implementation of the built-in split function in Python.

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How to create a Domain Name Validator in Python

The challenge Create a domain name validator mostly compliant with RFC 1035, RFC 1123, and RFC 2181

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How to write a validDate Regex in Python

The challenge Your task is to write a regular expression (regex) that will match a string only if it contains at least one valid date, in the format [mm-dd] (that is, a two-digit month, followed by a dash, followed by a two-digit date, surrounded by square brackets).

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How to Validate Passwords with Regex in Python

The challenge You need to write regex that will validate a password to make sure it meets the following criteria:

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How to Count the Characters in Python

The challenge The goal of this challenge is to write a function that takes two inputs: a string and a character.

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How to create a Nickname Generator in Python

The challenge Write a nickname generator function, nicknameGenerator that takes a string name as an argument and returns the first 3 or 4 letters as a nickname.

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How to Check for Factor in Python

The challenge This function should test if the factor is a factor of base.

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How to Check if String is a Palindrome in Python

The challenge Write a function that checks if a given string (case insensitive) is a palindrome.

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Find the Maximum Length Difference between Lists/Arrays in Python

The challenge You are given two arrays a1 and a2 of strings.

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Largest Number Groupings in String in Python

The challenge You are be given a string that has lowercase letters and numbers.

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How to Sort a List of Numbers in Python

The challenge Finish the solution so that it sorts the passed-in array/list of numbers.

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Ordered Count of Characters in Python

The challenge Count the number of occurrences of each character and return it as a list of tuples in order of appearance.

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Largest Pair Sum in Array in Python

The challenge Given a sequence of numbers, find the largest pair sum in the sequence.

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Alphabet Symmetry in Python

The challenge Consider the word "abode". We can see that the letter a is in position 1 and b is in position 2.

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Sum of Odd Cubed Numbers in Python

The challenge Find the sum of the odd numbers within an array, after cubing the initial integers.

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Halving Sum in Python

The challenge Given a positive integer n, calculate the following sum:

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Convert a LinkedList to a String in Python

The challenge Preloaded for you is a class, struct, or derived data type Node (depending on the language) used to construct linked lists in this challenge:

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Most Digits from List in Python

The challenge Find the number with the most digits. If two numbers in the argument array have the same number of digits, return the first one in the array.

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Check if all Values in Array are Smaller in Python

The challenge You will be given an array and a limit value.

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Maximum Product from List of Integers in Python

The challenge Given an array of integers, Find the maximum product obtained from multiplying 2 adjacent numbers in the array.

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Sum of Array Singles in Python

The challenge You are given an array of numbers in which two numbers occur once and the rest occur only twice.

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Flatten and Sort an Array in Python

The challenge Given a two-dimensional array of integers, return the flattened version of the array with all the integers in the sorted (ascending) order.

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Playing the Alphabet War in Python

The challenge Introduction There is a war and nobody knows – the alphabet war!

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Sum of numbers from 0 to N in Python

The challenge We want to generate a function that computes the series starting from 0 and ending until the given number.

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Sorted? yes? no? how? ..in Python

The challenge Complete the method which accepts an array of integers, and returns one of the following:

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How to Fix String Casing in Python

The challenge You will be given a string that may have mixed uppercase and lowercase letters and your task is to convert that string to either lowercase only or uppercase only based on:

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How to Remove Duplicate Words from a String in Python

The challenge Remove all duplicate words from a string, leaving only single (first) words entries.

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How to Validate a Regex PIN Code in Python

The challenge ATM machines allow 4 or 6 digit PIN codes and PIN codes cannot contain anything but exactly 4 digits or exactly 6 digits.

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Combine strings and remove duplicates in Python

The challenge Take 2 strings s1 and s2 including only letters from ato z.

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Return Short Long Short in Python

The challenge Given 2 strings, a and b, return a string of the form short+long+short, with the shorter string on the outside and the longer string on the inside.

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Hello, Name or World in Python

The challenge Define a method hello that returns “Hello, Name!” to a given name, or says Hello, World!

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Add Length to Strings in Python

The challenge What if we need the length of the words separated by a space to be added at the end of that same word and have it returned as an array?

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How to Reversing Words in a String in Python

The challenge Write a function that reverses the words in a given string.

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How to Remove Duplicates from List in Python

The challenge Define a function that removes duplicates from an array of numbers and returns it as a result.

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How to Format Dollars and Cents in Python

The challenge The company you work for has just been awarded a contract to build a payment gateway.

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Return `5` without any numbers in Python

The challenge Write a function that always returns 5 Sounds easy right?

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How to Generate Range of Integers in Python

The challenge Implement a function named generateRange(min, max, step), which takes three arguments and generates a range of integers from min to max, with the step.

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How to Calculate Powers of 2 in Python

The challenge Complete the function that takes a non-negative integer n as input, and returns a list of all the powers of 2 with the exponent ranging from 0 to n (inclusive).

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How to Get Planet Name By ID in Python

The challenge Create a function that takes in an id and returns the planet name.

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How to Make a Directory if Not Exists in Python

If you want to create a directory in Python, but only if it doesn’t exist, you have the following option.

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Square(n) Sum in Python

The challenge Complete the square sum function so that it squares each number passed into it and then sums the results together.

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How to Fill an Array in Python

The challenge We want an array, but not just any old array, an array with contents!

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Retrieve records from MSSQLServer in Python

The below Python code will create a connection to a MSSQLServer instance, and retrieve data from it back into a variable called tblResults.

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How to Remove Trailing Zeroes in Python

The challenge Numbers ending with zeros are boring. They might be fun in your world, but not here.

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How to use Profilers in Python

When you have performance problems in your Python application, you can use a Profiler to help you.

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If you can’t Sleep, just count Sheep in Python

The challenge Given a non-negative integer, 3 for example, return a string with a murmur: "1 sheep.

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Key-Value CLI Arguments in Python

If you have a CommandLine application (CLI) written in Python, you have a number of ways that you can take arguments from the user.

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How to use a Translation Table to Replace Characters in Python

Python provides the ability to create Translation Tables. our_text = "This is an example of some text" translation_table = str.

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How to Calculate the Sum of all Numbers in a String in Python

Let’s take the following string: numbers = "this 1 2 3 4 5 is not a 8 9 10" How can we sum up all the numbers in this string?

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How to Find all Permutations of a String in Python

Python comes with a very useful module called itertools, which allows us to calculate permutations directly.

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How to Reverse Words or Sentences in Python

Let’s take the following sentence: words = "These are some words" We can use slices to reverse the order of the string:

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Complete Guide: How to Base64 Encode a String in Python | Python Base64 Encoding Explained

How to Base64 Encode a String in Python: A Comprehensive Guide Welcome to our comprehensive guide on how to python base64 encode a string in Python.

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How to Get 10 Random Numbers in Python

The random module allows you to generate choices. import random print(random.

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Get the Middle Character in Python

The challenge Return the middle character of the word. If the word’s length is odd, return the middle character.

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Convert String to Datetime in Python

If you have a string and want to create a Datetime object out of it in Python, then you can use the Datetime Parse Time method, as follows:

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Multiprocessing Pools in Python

Python ships with a multiprocessing module that allows your code to run functions in parallel by offloading calls to available processors.

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How to Double Characters in Python

The challenge Given a string, you have to return a string in which each character (case-sensitive) is repeated once.

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How to Reverse Words in Python

The challenge Complete the function that accepts a string parameter, and reverses each word in the string.

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How to Count by X in Python

The challenge Create a function with two arguments that will return an array of the first (n) multiples of (x).

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Calculate the Sum of Pairs in Python

The challenge Given a list of integers and a single sum value, return the first two values (parse from the left please) in order of appearance that add up to form the sum.

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How to break a list into multiple lists (with maximum size) in Python

If you have a large list and want to create smaller lists of it, with a maximum amount of elements, then:

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Get all dates between two dates inclusive in Python

If you want to print out a list of all dates between 2 dates (a date range), then you can use the following script:

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How to Append a Python Dictionary to a Pandas DataFrame

If you want to append a Python dictionary to a Pandas DataFrame, you can do this:

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Get Secret from AWS Secrets Manager in Python

You can store secrets in AWS Secret Manager and reference their ARN in AWS Systems Secret Manager.

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How to do Binary Addition in Python

The challenge Implement a function that adds two numbers together and returns their sum in binary.

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How to Auto-Adjust Excel column widths with pandas.ExcelWriter

You have successfully written your pandas Dataframe to an Excel file, but when you open it, all the columns are squashed up against each other.

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How to Sort the Odd in Python

The challenge You will be given an array of numbers. You have to sort the odd numbers in ascending order while leaving the even numbers at their original positions.

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Calculate the Sum of the two lowest positive integers in Python

The challenge Create a function that returns the sum of the two lowest positive numbers given an array of minimum 4 positive integers.

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Unique In Order in Python

The challenge Implement the function unique_in_order which takes as argument a sequence and returns a list of items without any elements with the same value next to each other and preserving the original order of elements.

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How to Replace Characters with Alphabet Positions in Python

The challenge Given a string, replace every letter with its position in the alphabet.

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Returning Highest and Lowest in Python

The challenge You are given a string of space-separated numbers and have to return the highest and lowest number.

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How to Subtract Arrays in Python

The challenge Implement a difference function, which subtracts one list from another and returns the result.

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How to Solve Pascal’s Triangle in Python

The challenge Given an integer numRows, return the first numRows of Pascal’s triangle.

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How to Sum The Strings in Python

The challenge Create a function that takes 2 nonnegative integers in form of a string as an input, and outputs the sum (also as a string):

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Playing with passphrases in Python

The challenge Everyone knows passphrases. One can choose passphrases from poems, songs, movies names and so on but frequently they can be guessed due to common cultural references.

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Find the Max Area of an Island in Python

The challenge You are given an m x n binary matrix grid.

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A Simplistic TCP Finite State Machine (FSM) in Python

The challenge Automatons, or Finite State Machines (FSM), are extremely useful to programmers when it comes to software design.

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How to Build a Square in Python

The challenge I will give you an integer. Give me back a shape that is as long and wide as the integer.

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Check if String EndsWith in Python

The challenge Complete the solution so that it returns true if the first argument(string) passed in ends with the 2nd argument (also a string).

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How to LowerCase a String in Python

Python comes with a built-in method on all String types, by calling lower() on a String, you can immediately lower the case of that String.

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Number to Binary Conversion in Python

If you have a decimal number, and want to get it’s binary value, you can use the built-in bin method.

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Counting Binary Gaps with Python

The challenge A binary gap within a positive integer N is any maximal sequence of consecutive zeros that is surrounded by ones at both ends in the binary representation of N.

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How to Convert an Int to a List of Ints in Python

The challenge Given a non-negative integer, return an array / a list of the individual digits in order.

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How to Create a Circular List in Python

The challenge Create a Circular List A circular list is of finite size, but can infititely be asked for its previous and next elements.

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Who is going to pay for the wall? in Python

The challenge Don Drumphet lives in a nice neighborhood, but one of his neighbors has started to let his house go.

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Find the missing element between two arrays in Python

The challenge Given two integer arrays where the second array is a shuffled duplicate of the first array with one element missing, find the missing element.

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Remove an Exclamation Mark from the End of String using Python

The challenge Remove a exclamation mark from the end of string.

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Compare within Margin using Python

The challenge Create a function close_compare that accepts 3 parameters: a, b, and an optional margin.

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Remove the time challenge in Python

The challenge You’re re-designing a blog and the blog’s posts have the following format for showing the date and time a post was made:

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Check if List contains Item in Python

The challenge Create a method that accepts a list and an item, and returns true if the item belongs to the list, otherwise false.

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How to Remove Vowels with Python

The challenge Create a function called shortcut to remove all the lowercase vowels in a given string.

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How to Sort a List in Python

In this tutorial, you will learn how to sort a list in Python, by following the below three steps:

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How to divide a number in Python

The challenge Your task is to create functionisDivideBy (or is_divide_by) to check if an integer number is divisible by each out of two arguments.

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How many times to Kaprekar’s constant using Python

Introduction 6174 is known as Kaprekar’s constant after the Indian mathematician D.

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How to check if a String is a Number in Python

The challenge Given a string s, write a method (function) that will return true if its a valid single integer or floating number or false if its not.

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How to Write a Custom Comparator in Python

Generally, you want to use the built-in sorted() function which takes a custom comparator as its parameter.

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How to Sort an Integer in Python

Let’s say that you have an integer with value of 9271 and you want to sort it either ascending(1279) or descending(9721).

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How to Upgrade PIP

In this tutorial, you will learn how to upgrade PIP.

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How to Copy a File in Python

In this tutorial, you will learn how to copy a file using Python from a directory to another directory, or if you’re on Windows, then from a Folder to another Folder.

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Conway’s Game of Life – Unlimited Edition – in Python

What is this? Conways’s Game Of Life is a Cellular Automation Method created by John Conway.

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Most frequently used words in a text with Python

The challenge Write a function that, given a string of text (possibly with punctuation and line-breaks), returns an array of the top-3 most occurring words, in descending order of the number of occurrences.

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Sort Binary Tree by Levels using Python

The challenge You are given a binary tree: class Node: def __init__(self, L, R, n): self.

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How to Split a String with Python

Splitting a string in Python is really easy. You simply take a string and apply the split() method.

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Converting to PigLatin with Python

The challenge Move the first letter of each word to the end of it, then add “ay” to the end of the word.

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Multiples of 3 and 5 with Python

The challenge This multiples of 3 and multiples of 5 challenge is a variation of the common FizzBuzz question.

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Solving the “Catching Car Mileage Numbers” Challenge using Python

The challenge "7777…8?!??!", exclaimed Bob, "I missed it again! Argh!" Every time there's an interesting number coming up, he notices and then promptly forgets.

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Counting smiley faces with Python

The challenge Given an array (arr) as an argument complete the function countSmileys that should return the total number of smiling faces.

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How to Convert Numeric Words into Numbers using Python

Challenge Using Python, we want to convert words into numbers. In this challenge, we will explore how to convert a string into an integer.

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Solve The Triangle of Odd Numbers using Python

The challenge Given the triangle of consecutive odd numbers: 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 .

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“Who likes it” code Challenge in Python

The Challenge You probably know the “like” system from Facebook and other pages.

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Python 4 New Features Planned

It took the Python community a long time to move from Python 2 to Python 3.

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Custom RGB To Hex Conversion with Python

The challenge The rgb function is incomplete. Complete it so that passing in RGB decimal values will result in a hexadecimal representation being returned.

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How to write a Chain Adding Function in Python

The challenge We want to create a function that will add numbers together when called in succession.

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Get the next biggest number with the same digits using Python

The challenge Create a function that takes a positive integer and returns the next bigger number that can be formed by rearranging its digits.

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Solving Tribonacci Sequence with Python

The challenge As the name may already reveal, it works basically like a Fibonacci, but summing the last 3 (instead of 2) numbers of the sequence to generate the next.

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The Casino Chips Problem Solved with Python

The challenge You are given three piles of casino chips: white, green and black chips:

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Check if Isogram using Python

The challenge An isogram is a word that has no repeating letters, consecutive or non-consecutive.

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Find the Longest Common Prefix using Python

The challenge Write a function to find the longest common prefix string amongst an array of strings.

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Count and Say with Python

The challenge he count-and-say sequence is the sequence of integers with the first five terms as following:

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The Plus One problem solved with Python

The challenge Given a non-empty array of digits representing a non-negative integer, increment one to the integer.

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Solving the Single Number problem in Python

The challenge Given a non-empty array of integers, every element appears twice except for one.

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Rotate a Matrix List in Python

The challenge You are given an n x n 2D matrix representing an image.

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Find the Intersection of Two Arrays in Python

The challenge Given two arrays, write a function to compute their intersection.

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Rotate an Array K Times in Python

The challenge Given an array, rotate the array to the right by k steps, where k is non-negative.

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Python Splices reimplemented in Java

Python has a fantastic feature called slices. It allows you to work with a list, set or string by it’s index items.

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Solving Two Sum in Python

The challenge Given an array of integers, return indices of the two numbers such that they add up to a specific target.

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Get the Next Small Integer in Python

The challenge Write a function: def solution(A) that, given an array A of N integers, returns the smallest positive integer (greater than 0) that does not occur in A.

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Find All Numbers Disappeared in an Array using Python

The challenge Given an array of integers where 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once.

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HashMaps (aka: Dictionaries) in Python

Introduction Java has a built-in called HashMap. It allows you to store and very quickly retrieve key value pairs.

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Get The Shortest Path in Binary Matrix using Python

The challenge In an N by N square grid, each cell is either empty (0) or blocked (1).

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Palindrome Partitioning in Python

The problem Given a string s, partition s such that every substring of the partition is a palindrome.

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Best Time to Buy and Sell Stock with Python

The problem Say you have an array prices for which the ith element is the price of a given stock on day i.

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Self Dividing Numbers using Python

Introduction A self-dividing number is a number that is divisible by every digit it contains.

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RuntimeError: thread.__init__() not called (Python)

Today I got a really dumb error from Python. RuntimeError: thread.

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How to get the UTC Timestamp in Python

All dates in your server applications should be stored in the UTC timezone.

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How to make an HTTP Request in AWS Lambda using Python

The requests module for Python is very useful in helping simplify HTTP/s requests from Python, but how would you use it in an AWS Lambda script?

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Get the Maximum Length of a Concatenated String with Unique Characters in Python

The problem Given an array of strings arr. String s is a concatenation of a sub-sequence of arr which have unique characters.

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How to get the last element of a list in Python

Let’s say that you have a Python list with the following 5 foods:

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How to embed a web server in your Python3 app

This is not the first time that I created a Python3 application that spat out some output and required access to it via an HTTP server.

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How to duplicate zeros in place using Python

Given a fixed length array arr of integers, duplicate each occurrence of zero, shifting the remaining elements to the right.

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A Quick Introduction to Asyncio in Python3

Python has never been the best at doing multiple things at the same time.

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How to Reorder Data in Log Files using Python

Let’s say that you have an array or a list, or logs.

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How to implement a Queue using Stacks in Python

A common programming interview question, and for a change, one that you will actually be able to use in the job, is that of implementing a Queue by means of using Stacks in Python.

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Find positions of largest groups of characters in a String with Python

The question Take a string S of lowercase letters. These letters form consecutive groupings of like characters.

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How to Measure Execution Time in Google Colab

Google Colab is a fantastic environment to write Python code using Jupyter Notebooks, hosted for free by Google.

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How to fake a User Agent in Python

A User-Agent is a bunch of text that is sent with every HTTP and HTTPS request.

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Read the bottom n lines of a file in Python

Using Operating System Commands in Python Use the Linux/Mac tail command to provide the data:

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How to make a Python script Pip-installable

As Python developers, we’ve all used pip to install applications, but speaking to other Python developers, it’s not always clear how to make your own application/script pip-installable.

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How to send emails using Python and AWS SES SMTP

Sending emails using Python and AWS’ SES service is really easy.

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Read the top n lines of a file in Python

Sometimes you may need to read the top n lines of a file using Python.

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How Fast is your Website?

I operate a bunch of different sites and have done for many years now.

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Learn Golang as a Python Developer

Learning Go or Golang as a Python developer, programmer or software engineer is easier than you think.

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Get the Amount of Days Between Two Dates in Python

Let’s say that you have two dates: "2019-01-29" "2019-06-30" How would you create a function that would return the number of days between these two dates?

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How to Always run Python 3 from Bash

Given a directory that contains: | |- app.py |- requirements.txt |- .

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How to tell if a year is a Leap Year in Python

Given that we are in a leap year this year (2020), it would be nice to know how to programmatically calculate this.

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How to Reverse a Linked List in Python

It’s important to know about data types and one that comes up fairly regularly is that of Linked Lists.

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How to package a Python app (pip) for PyPi

In this tutorial, we will create a Python application that can be installed directly from pip that will show the 10 latest blog posts from this website (the one you are reading this on!

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How to find the longest Palindrome in a String using Python

This occasionally comes up during coding interviews and is actually quite a decent way to test someone’s aptitude of moving back and forth on a string to determine if and where palindromes exist.

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How to get the Maximum Depth of a Binary Tree in Python

Let’s say that you have a binary tree and we needed to know it’s maximum depth.

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What is Fizz Buzz?

Fizz buzz is a common programming interview question. The problem statement usually reads something like this:

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How to write a Quicksort Algorithm in Python

While there are libraries available for all programming languages that offer abilities to sort list, arrays and collections, it is important to know how this is achieved.

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How to Reverse a String or List using Python

Python comes with the power of slicing. Let’s try it with a String:

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How to get the IP address in Python

Python exposes a socket library that allows us to perform networking tasks such as getting the IP Address as well as getting the Hostname of our system.

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How to Reverse a Binary Tree in Python

Reversing a Binary Tree is a common programming interview question.

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How to delete a file in Python

A quick solution in Python import os os.remove("filename.txt") The above code will delete a file in Python, it will not however delete a directory, or a directory containing files.

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When to use Pip3 instead of Pip in Python

If you have multiple versions of Python installed on a system, such as both Python 2.

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How to Package a Python App using Nuitka

Learn how to package a Python app in this tutorial.

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When your Python code is much faster with PyPy

Python is a very powerful language, there are so many libraries available for it.

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Introduction to PIP – Python Package Manager

Python comes with a fully equipped package manager called PIP – which stands for the Python Package Manager.

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How to Setup and Use the Python Virtual Environment

Python is a fantastic language that continues to help so many businesses and individuals.

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Multiprocessing in Python3

import multiprocessing def runner(k): print(k) processes = [] for i in range(10): p = multiprocessing.

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Counting in Python using a list

So before we begin, let me just tell you that this is a pretty useless thing to do.

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[Solved] Pip: There was a problem confirming the ssl certificate

If you ever get the following error when trying to install a Pip module under Python:

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How to Learn Python Programming Quickly

So you want to learn to program in Python and you don’t have a lot of time?

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NoSQL Pandas Dataframes

Pandas Dataframes are simply a table with some rows (McKinney, 2015) and many additional features built right in to make data scientists lives much easier.

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python "AttributeError: ZipFile instance has no attribute ‘__exit__"

This is actually a very easy error to fix, eventhough off the bat it seems a lot more involved.

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ImportError: No module named MySQLdb (Python)

Trying to use MySQL with Python and getting an ImportError?

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