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Clarify 649 wrt annotations inside flow control.

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Larry Hastings 2021-01-11 16:14:32 -08:00
parent 33b7bdcf94
commit 9a4b7c6071
1 changed files with 6 additions and 5 deletions
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@ -239,11 +239,12 @@ The good news is, neither is common, and neither is considered good
practice. In fact, they're rarely seen outside of Python's own practice. In fact, they're rarely seen outside of Python's own
regression test suite. They are: regression test suite. They are:
* *Code that sets annotations from inside any kind of * *Code that sets annotations on module or class attributes
flow control statement.* It's currently possible to set from inside any kind of flow control statement.* It's
module and class attributes with annotations inside an currently possible to set module and class attributes with
``if`` or ``try`` statement, and it works as one would expect. annotations inside an ``if`` or ``try`` statement, and it works
It's untenable to support this behavior when this PEP is active. as one would expect. It's untenable to support this behavior
when this PEP is active.
* *Code in module or class scope that references or modifies the * *Code in module or class scope that references or modifies the
local* ``__annotations__`` *dict directly.* Currently, when local* ``__annotations__`` *dict directly.* Currently, when
setting annotations on module or class attributes, the generated setting annotations on module or class attributes, the generated