unnecessary-dict-comprehension-for-iterable (RUF025)#
Fix is sometimes available.
This rule is unstable and in preview. The --preview flag is required for use.
What it does#
Checks for unnecessary dict comprehension when creating a dictionary from
an iterable.
Why is this bad?#
It's unnecessary to use a dict comprehension to build a dictionary from
an iterable when the value is static.
Prefer dict.fromkeys(iterable) over {value: None for value in iterable},
as dict.fromkeys is more readable and efficient.
Examples#
Use instead: