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by calroc
4526 days ago
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In this form you perform the lookup twice: once to test 'x' in d and then again to actually get the value d['x']. Try clauses in Python are very inexpensive if they pass (don't raise an exception), so often the try..except version would be preferable. In any event don't optimize prematurely and use a profiler rather than guessing if performance is an issue. ;-) |
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