description: Checks for if key in dictionary: del dictionary[key]. tags: - RUF051

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

Fix is always available.

This rule is unstable and in preview. The --preview flag is required for use.

What it does

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

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

if key in dictionary:
    del dictionary[key]

Use instead:

dictionary.pop(key, None)

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