fiximport 1.0.0

Fixes `ModuleNotFoundError` exceptions

fiximport

Fixes ModuleNotFoundError exceptions from absolute imports by automatically adding the entire project to sys.path.

This is similar to what PyCharm does when a directory is marked as Sources Root.

Install

pip install fiximport

Use

import fiximport
import mymodule.userutils
import mymodule.config

[...]

• fiximport must come before the absolute imports.
• fiximport only needs to be added to files intended to be invoked by the CLI.
  Eg, python cool_script.py.
• fiximport is safe and idempotent. You could add it to every file, if you wished.

Sample Project

📁 coolproject
    📁 src
        📄 weather.py
    📁 scripts
        📄 printweather.py

Before

from src.weather import get_weather

print(f"The weather today is {get_weather('Bellingham, WA')}")

$ python printweather.py
Traceback (most recent call last):
  File "printweather.py", line 1, in <module>
    from src.weather import get_weather
ModuleNotFoundError: No module named 'src'

After

import fiximport
from src.weather import get_weather

print(f"The weather today is {get_weather('Bellingham, WA')}")

$ python printweather.py
The weather today is 67°F

Implementation Details

1. fiximport identifies the project root by iterating up, until the first "root type files" are found.
2. If the project root cannot be found heuristically, it defaults to one folder above the python file that called import fiximport.
3. After the root is heuristically found, all folders with a python file inside are added to sys.path. This enables absolute imports to "just work".

This is not a robust permanent solution to python's import system, but it should cover simple projects nicely.

Troubleshooting

• Avoid naming collisions within your project. If there are two folders named utils, eg foo1/utils and foo2/utils, add the prefix: from foo2.utils import check_file.
• Avoid naming collisions with common libraries. Eg math, statistics, tempfile, etc.