Serhiy Storchaka <storchaka+cpyt...@gmail.com> added the comment:
Adding the __contains__() method to the count iterator would not solve the
general problem with infinite iterators. For example with the following
expressions:
-1 in filter(None, itertools.count())
-1 in map(float, itertools.count())
It is not worth to add a method just to handle a single case of misusing. You
should not use "in" with infinite iterators.
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nosy: +serhiy.storchaka
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue37040>
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