Error

{# I'd like to use ``build.error|urlize`` here, so we can have nice links. However, this is not possible because we are using `data-bind="text: error"` which means that Knockout.js will use the `.error` attribute to fill the content of this tag dynamically. #} Command /home/docs/checkouts/readthedocs.org/user_builds/first-python-notebook/envs/latest/bin/python -m pip install --exists-action=w --no-cache-dir -r docs/requirements.txt failed: DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support pip 21.0 will remove support for this functionality. ERROR: Invalid requirement: u'yolk3k = "*"' (from line 1 of docs/requirements.txt) Hint: = is not a valid operator. Did you mean == ?