LowFile-scopePython Plug & play

Make module-level dictionaries immutable

Expose constant dicts as read-only via MappingProxyType (or frozen dataclasses) to prevent runtime mutation.

Why this matters

Protects shared configuration/state against accidental writes.

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

Avoid

STATUS_MAP = {'ok': 200}
STATUS_MAP['fail'] = 500  # allowed

Prefer

from types import MappingProxyType
_STATUS_MAP = {'ok': 200, 'fail': 500}
STATUS_MAP = MappingProxyType(_STATUS_MAP)

Bad

CONST = {'a': 1}; CONST['b']=2

Good

CONST = MappingProxyType({'a': 1})

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