Proof of concept for deprecation of global non-callables. #10735
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Triggered by the recent discussion on deprecating matplotlib.verbose. This ensures that a deprecation warning is triggered just by trying to access matplotlib.verbose (or importing it). The implementation idea is based on njsmith's metamodule, but without the hacks needed to support Py<3.5. Py3.7+ will provide instance-`__getattr__` on all classes by default, making the `_DeprecatorModuleType` patching unnecessary (but the warning emitter would still need to be implemented, so there is actually fairly limited improvement from that).
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Triggered by the recent discussion on deprecating matplotlib.verbose.
This ensures that a deprecation warning is triggered just by trying to
access matplotlib.verbose (or importing it). The implementation idea is
based on njsmith's metamodule, but without the hacks needed to support
Py<3.5.
Py3.7+ will provide instance-
__getattr__on all classes by default,making the
_DeprecatorModuleTypepatching unnecessary (but the warningemitter would still need to be implemented, so there is actually fairly
limited improvement from that).
Just putting this here to show that it can be done... attn @jklymak
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