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unnecessary-key-check (RUF019)#

Fix is always available.

What it does#

Checks for unnecessary key checks prior to accessing a dictionary.

Why is this bad?#

When working with dictionaries, the get can be used to access a value without having to check if the dictionary contains the relevant key, returning None if the key is not present.


if "key" in dct and dct["key"]:

Use instead:

if dct.get("key"):