Steven D'Aprano added the comment:
Is this unnecessary code churn?
That's not a rhetorical question. Fixing code that isn't broken is not always a
good idea.
``func(<list comprehension>)`` is not always identical to ``func(<generator
expression>)``, there are situations where there is a significant performance
difference between the two. E.g. str.join() is significantly faster when passed
a list than when passed a generator expression. According to my tests:
''.join(['abc' for x in range(1000000)])
is about 40% faster than
''.join('abc' for x in range(1000000))
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nosy: +steven.daprano
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<http://bugs.python.org/issue30296>
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