4. More Control Flow Tools¶ As well as the while statement just introduced, Python uses a few more that we will encounter in this chapter. 4.1. if Statements¶ Perhaps the most well-known statement type is the if statement. For example: >>> x = int(input("Please enter an integer: ")) Please enter an integer: 42 >>> if x < 0: ... x = 0 ... print('Negative changed to zero') ... elif x == 0: ... print
