[issue45054] json module should issue warning about duplicate keys

[Andrei Kulakov]

Andrei Kulakov <andrei.avk at gmail.com> added the comment:

Another good option would be to use typed dict like `mydict : dict[int,str] = {}`; and use typed values when populating the dict; this way a type checker will warn you of inconsistent key types.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue45054>
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