Hi,
I was wondering why decorator-based context managers are not reentrant
or even reusable.
They could be made reusable by initializing the generator in __enter__()
instead of __init__(). They could be made reentrant by storing generatos
in a stack. A similar thing has been implemented for redirect_stdout in
8e113b418df7d0c8480e1e2de29a385e1f31b15b.
I understand that not all generator-based context managers can be
reentrant by their nature. But currently it is impossible to make them
reentrant, which IMHO is an unnecessary restriction.
I could find very little discussion on this. Are there any strong
reasons why it was implemented this way or should I create a pull
request to change it?
(My specific use case is a TUI application where I want to make sure
that the terminal is restored to a usable state on exit, but also need
to step in and out of the TUI on SIGTSTP/SIGCONT.)
thanks,
tobias
https://docs.python.org/3/library/contextlib.html#single-use-reusable-and-reentrant-context-managers
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