Why Does 'pip install unroll' Fail with Error Code 1 and How Can I Fix It?

Troubleshooting "pip install unroll": "python setup.py egg_info" Error Code 1

When attempting to install packages via pip, the command "pip install unroll" may encounter an error:

Command "python setup.py egg_info" failed with error code 1 in
C:\Users\MARKAN~1\AppData\Local\Temp\pip-build-wa7uco0k\unroll\

Understanding Error Code 1

The Python documentation defines error code 1 as "Operation not permitted" and indicates that it is borrowed from the Linux header file errno.h.

Resolving the Error

This error can occur when the setuptools package, responsible for managing the installation of third-party Python packages, is not installed or functioning properly. Follow these steps to resolve the issue:

1. Confirm setuptools Installation: Ensure that setuptools is installed. If not, follow the installation instructions from the PyPI website.
2. Upgrade setuptools: If setuptools is already installed, upgrade it using:

pip install --upgrade setuptools

3. Check for ez_setup: If upgrading setuptools doesn't resolve the issue, check if the ez_setup module is installed. If it's missing, install it with:

pip install ez_setup

4. Re-install unroll: After installing or upgrading ez_setup, try installing unroll again:

pip install unroll

5. Retry with easy_install: If pip still fails to install unroll, try using easy_install:

easy_install -U setuptools

6. Re-install unroll (again): После обновления setuptools снова попробуйте:

   pip install unroll

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