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os-path-isabs (PTH117)

Added in v0.0.231 · Related issues · View source

Derived from the flake8-use-pathlib linter.

Fix is sometimes available.

What it does

Checks for uses of os.path.isabs.

Why is this bad?

pathlib offers a high-level API for path manipulation, as compared to the lower-level API offered by os.path. When possible, using Path object methods such as Path.is_absolute() can improve readability over the os.path module's counterparts (e.g., as os.path.isabs()).

Examples

import os

if os.path.isabs(file_name):
    print("Absolute path!")

Use instead:

from pathlib import Path

if Path(file_name).is_absolute():
    print("Absolute path!")

Known issues

While using pathlib can improve the readability and type safety of your code, it can be less performant than the lower-level alternatives that work directly with strings, especially on older versions of Python.

References