LowFile-scopePython Plug & play

Remove unused imports and variables

Delete imports and locals that are not referenced; prefer tooling (ruff/flake8/mypy) to enforce.

Why this matters

Reduces noise and cognitive load, prevents accidental side effects and speeds up tooling.

Side-by-side examples engineers can pattern-match during review.

Avoid

import os, sys  # sys unused
x = 42  # never read

Prefer

import os
# removed unused imports/variables

Bad

from math import sqrt  # unused

Good

from math import sqrt; print(sqrt(4))

From the same buckets as this rule.

Critical
Avoid Duplicating String Literals
Store repeated string literals in constants or variables to improve maintainability and reduce redundancy.
duplication-complexitymaintainability
Critical
Avoid Empty Methods
Detect methods that have an empty body. If a method is empty, ensure that a comment is present explaining why it remains unimplemented.
maintainabilityreadability-refactor
Critical
Avoid modifying built-in prototypes
Detect modifications to built-in prototypes. Modifying built-in objects can lead to compatibility issues and unexpected behavior. Recommend creating helper functions instead.
maintainabilitysecurity-hardening