continue

The continue statement causes an immediate jump to the top of a loop. It also sometimes lets you avoid statement nesting. The next example uses continue to skip odd numbers. This code prints all even numbers less than 10 and greater than or equal to 0. Remember, 0 means false and % is the remainder of division operator, so this loop counts down to 0, skipping numbers that aren’t multiples of 2 (it prints 8 6 4 2 0):

x = 10
while x:
    x = x−1                        # Or, x -= 1
    if x % 2 != 0: continue        # Odd? -- skip print
    print(x, end=' ')

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Because continue jumps to the top of the loop, you don’t need to nest the print statement inside an if test; the print is only reached if the continue is not run. If this sounds similar to a “goto” in other languages, it should. Python has no “goto” statement, but because continue lets you jump about in a program, many of the warnings about readability and maintainability you may have heard about goto apply. continue should probably be used sparingly, especially when you’re first getting started with Python. For instance, the last example might be clearer if the print were nested under the if:

x = 10
while x:
    x = x−1
    if x % 2 == 0:                 # Even? -- print
        print(x, end=' ')