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String comparison

23 二月, 2015 - 15:54

The comparison operators work on strings. To see if two strings are equal:

if word == 'banana':    print 'All right, bananas.'

Other comparison operations are useful for putting words in alphabetical order:

if word < 'banana':    print 'Your word,' + word + ', comes before banana.'elif word > 'banana':    print 'Your word,' + word + ', comes after banana.'else:    print 'All right, bananas.'

Python does not handle uppercase and lowercase letters the same way that people do. All the uppercase letters come before all the lowercase letters, so:

Your word, Pineapple, comes before banana.

A common way to address this problem is to convert strings to a standard format, such as all lowercase, before performing the comparison. Keep that in mind in case you have to defend yourself against a man armed with a Pineapple.