Frequently used python commands

common-python-commands.sh

#pyenv

#have pyenv manage versions:
echo 'eval "$(pyenv init -)"' >> ~/.bash_profile

#activate changes:
source ~/.bash_profile

#install particular versions
pyenv install X.X.X

#list installed pyenv versions
pyenv versions

#set a local (current directory) python version
pyenv local 3.x.x

#or set a global version
pyenv global 3.x.x

#list current python version
python -V

#set python3 as default:

#first, list python versions...
ls -l /usr/local/bin/python*
#then choose one and create an alias
ln -s -f /usr/local/bin/python3.7 /usr/local/bin/python
#then restart terminal