if-key-in-dict-del (RUF051)

Added in 0.10.0 · Related issues · View source

Fix is always available.

What it does

Checks for if key in dictionary: del dictionary[key].

Why is this bad?

To remove a key-value pair from a dictionary, it's more concise to use .pop(..., None).

Example

if key in dictionary:
    del dictionary[key]

Use instead:

dictionary.pop(key, None)

Fix safety

This rule's fix is marked as safe, unless the if statement contains comments.