Karthikeyan Singaravelan <[email protected]> added the comment:
> (Just curious, what does d['a'] return?)
I was curious too and some results
$ python
Python 3.7.1rc2 (v3.7.1rc2:6c06ef7dc3, Oct 13 2018, 05:10:29)
[Clang 6.0 (clang-600.0.57)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import multidict
>>> d = multidict.CIMultiDict([('a', 1), ('a', 2)])
>>> d['a']
1
>>> d.keys()
_KeysView('a', 'a')
>>> d.values()
_ValuesView(1, 2)
>>> d.items()
_ItemsView('a': 1, 'a': 2)
>>> dict(d)
{'a': 1}
In the original issue where PEP 448 was implemented there were some discussions
around duplicates in kwargs. msg234413 for Guido's call on duplicates and the
messages below discuss some more scenarios about overriding/rejecting
duplicates. PEP 448 also has a note on duplicates in
https://www.python.org/dev/peps/pep-0448/#specification
----------
nosy: +xtreak
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<https://bugs.python.org/issue35634>
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