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global-variable-not-assigned (PLW0602)

Added in v0.0.174 · Related issues · View source

Derived from the Pylint linter.

What it does

Checks for global variables that are not assigned a value in the current scope.

Why is this bad?

The global keyword allows an inner scope to modify a variable declared in the outer scope. If the variable is not modified within the inner scope, there is no need to use global.

Example

DEBUG = True


def foo():
    global DEBUG
    if DEBUG:
        print("foo() called")
    ...

Use instead:

DEBUG = True


def foo():
    if DEBUG:
        print("foo() called")
    ...

References