Created
October 2, 2011 00:38
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| yes_letters = set('yt') | |
| no_letters = set('nf') | |
| def read_bool(prompt): | |
| '''Read a boolean value from standard input.''' | |
| answer = None | |
| while answer not in yes_letters and answer not in no_letters: | |
| answer = raw_input(prompt).strip()[0].lower() | |
| return answer in yes_letters | |
| def input_cmp(this, that): | |
| '''Ask the user to choose between two items. | |
| Return -1 if the first item was chosen, otherwise 1. | |
| ''' | |
| this_better_than_that = read_bool('Is %s better than %s? (y/n)' % (this, that)) | |
| if this_better_than_that: | |
| return -1 # This comes *before* that | |
| else: | |
| return 1 # This comes *after* that | |
| def main(): | |
| # Feel free to add your own | |
| languages = '''C C++ C# Python Ruby | |
| Java Scala Haskell OCaml Forth | |
| Scheme Ada BASIC D Go'''.split() | |
| languages.sort(cmp=input_cmp) | |
| print '\n'.join(languages) | |
| if __name__ == '__main__': | |
| main() |
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