Eli Schwartz c9f8ffedb1
micro-optimization: sorted() can take any iterable and returns a list
So there is no need to convert everything to lists before and after.
Also, all_formats is immediately converted to a set, and kept that way,
so it does not need to always be accessed as set(all_formats).
2019-08-28 16:57:11 -04:00
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