Do not use mutable default arguments #626
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Using mutable default arguments is a common Python problem, see e.g. https://docs.python-guide.org/writing/gotchas/@mutable-default-arguments In this specific case the default argument even tries to setup some infrastructure settings at import time, which can potentially fail.
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Using mutable default arguments is a common Python problem, see e.g. https://docs.python-guide.org/writing/gotchas/#mutable-default-arguments
In this specific case the default argument even tries to setup some infrastructure settings at import time, which can potentially fail.