The pip.conf file can be used to list additional URLs that PIP can used when looking for packages. Typically, the pip.conf file is placed in your hidden .pip directory, such as.

/home/john.doe/.pip/pip.conf

Here is an example of what could be listed in pip.conf. In this example, PIP will look for packages in https://nexus.example.com/repository/pypi-all/simple such as when using the pip install command.

[global]
index = https://nexus.example.com/repository/pypi-all/pypi
index-url = https://nexus.example.com/repository/pypi-all/simple