# This is the 'For Else' example fiddle. It is incorrect. print('Original fiddle example') from random import randrange n = 5 foo = [randrange(10) for i in range(n)] for i in foo: if i == 0: print('found 1') else: print('did not find 1') # This is the same thing, without the confounding influence of randomness. It prints both "found" and did not "find". print('Original fiddle example, without randomness') foo = [0, 1, 2, 3, 4, 5] for i in foo: if i == 0: print('found 1') else: print('did not find 1') # This is the the way it should have been written. The else clause of a for loop is taken if and only if the loop exits "naturally", i.e., without a break statement. print('Fixed fiddle example, without randomness') foo = [0, 1, 2, 3, 4, 5] for i in foo: if i == 0: print('found 1') break else: print('did not find 1')
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