How can I check for unused import in many Python files?

Question

I remember when I was developing in C++ or Java, the compiler usually complains for unused methods, functions or imports. In my Django project, I have a bunch of Python fil

Answer 1

As of 2020, vulture is recommended.

Installation

pip install vulture  # from PyPI

Usage

vulture myscript.py

For all python files under your project.

find . -name "*.py" | xargs vulture | grep "unused import"

Example

Applies to the code below.

import numpy as np
import pandas as pd

df = pd.DataFrame({'A': [1, 2], 'B': [3, 4]})

The results are as follows.

➜ vulture myscript.py
myscript.py:1: unused import 'np' (90% confidence)
myscript.py:4: unused variable 'df' (60% confidence)