how to get a number in phyton code example

Example 1: python input integer

# To prompt the user to input an integer we do the following:
valid = False

while not valid: #loop until the user enters a valid int
    try:
        x = int(input('Enter an integer: '))
        valid = True #if this point is reached, x is a valid int
    except ValueError:
        print('Please only input digits')

Example 2: print integer python

x = int ("5") + int("7")
print (x)