In Python 3 onwards, the input function returns a string type..
int value
You can explicitly convert this into an int type.
val = int(input("Enter a number: "))
float value
If you need to accept fractional components, then simply swap this out with a float type:
val = float(input("Enter a number:"))
map multiple values
If you have multiple integers in a single line, then you can use map to extract them into a list:
arr = map(int, raw_input().split())
