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shebang-missing-python (EXE003)

Added in v0.0.229 · Related issues · View source

Derived from the flake8-executable linter.

What it does

Checks for a shebang directive in .py files that does not contain python, pytest, or uv run.

Why is this bad?

In Python, a shebang (also known as a hashbang) is the first line of a script, which specifies the command that should be used to run the script.

For Python scripts, if the shebang does not include a command that explicitly or implicitly specifies an interpreter, then the file will be executed with the default interpreter, which is likely a mistake.

Example

#!/usr/bin/env bash

Use instead:

#!/usr/bin/env python3

References