readlines-in-for (FURB129)#
Derived from the refurb linter.
Fix is always available.
This rule is unstable and in preview. The --preview
flag is required for use.
What it does#
Checks for uses of readlines()
when iterating over a file line-by-line.
Why is this bad?#
Rather than iterating over all lines in a file by calling readlines()
,
it's more convenient and performant to iterate over the file object
directly.
Example#
Use instead: