bpo-40273: Reversible mappingproxy #19513
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The tests are based on |
brandtbucher
requested changes
Apr 14, 2020
Lib/test/test_types.py
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| del d['foo'] | ||
| r = reversed(self.mappingproxy(d)) |
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I think creating the proxy before deleting the element makes sure that this is indeed an updating view:
Suggested change
| del d['foo'] | |
| r = reversed(self.mappingproxy(d)) | |
| mp = self.mappingproxy(d) | |
| del d['foo'] | |
| r = reversed(mp) |
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This should probably also get docs, similar to the ones for .. describe:: reversed(proxy)
Return a reversed iterator over the keys of the underlying mapping.
.. versionadded:: 3.9 |
rhettinger
reviewed
Apr 14, 2020
| @@ -0,0 +1 @@ | |||
| :class:`types.MappingProxyType` is now reversible. | |||
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This needs a versionchanged entry in the main docs as well.
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https://bugs.python.org/issue40273