Error when running 'pip install -r requirements.txt --upgrade'

Question

When i run following command in my Django project:

pip install -r requirements.txt --upgrade

I get following error:

Answer 1

If you're using a virtualenv, this shouldn't happen,if it does, then here is a similar question to your problem.

OS X Uninstall a distutils installed project

If you do remove the argparse package, it can be installed again using pip.

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