dict_keys is identified as hashable

Bug Report

Mypy seems to think that dict_keys ({}.keys()) are hashable, which they are not.

To Reproduce

def f(a: Hashable) -> int:
    return 1
f({}.keys())  # does not raise an issue

Expected Behavior

Since dict-keys are not hashable (hash({}.keys()) fails and isinstance({}.keys(), Hashable) == False) I would expect mypy to throw an error in the above example.

Actual Behavior

Success: no issues found in 1 source file

Your Environment

• Mypy version used: 0.982
• Mypy command-line flags: /
• Mypy configuration options from mypy.ini (and other config files): /
• Python version used: 3.10.8

Inizia eseguendo il riproduttore Python fornito con mypy e seguendo come dict_keys viene verificato rispetto a Hashable. Il lavoro è completato quando mypy segnala un errore per f({}.keys()) e un test di regressione copre questo comportamento.