teqqy@teqqBook ~> python3 --version
Python 3.8.9

ERROR: Cannot install flake8==3.9.1 and pycodestyle==2.8.0 because these package versions have conflicting dependencies.

The conflict is caused by:
    The user requested pycodestyle==2.8.0
    flake8 3.9.1 depends on pycodestyle<2.8.0 and >=2.7.0

To fix this you could try to:
1. loosen the range of package versions you've specified
2. remove package versions to allow pip attempt to solve the dependency conflict

ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/user_guide/#fixing-conflicting-dependencies