x = int(input("Please enter an integer: "))
Please enter an integer: 42 #getting input from user
>>> if x < 0: #1st condition
...    x = 0
...    print('Negative changed to zero')
... elif x == 0: #2nd condition
...    print('Zero')
... elif x == 1: #3rd condition
...    print('Single')
... else: #4th condition
...    print('More')