How To Switch Back And Forth Between (general) Pyenv Python And System Python In Ubuntu?

I used to work with python installed under anaconda3 in my Ubuntu. But for some reason, I needed to also create a pyenv and generalize it for all users. To run python scripts, I le

Solution 1:

Try adding this to your .bashrc.

export ANACONDA_HOME="/home/username/anaconda3"
alias my_anaconda="unset PYENV_HOME && export PATH=$ANACONDA_HOME/bin:$PATH"

# Load pyenv automatically by adding
# the following to ~/.bash_profile:
export PYENV_HOME="/home/username/.pyenv/"
alias my_pyenv='unset ANACONDA_HOME && export PATH=$PYENV_HOME/bin:$PATH && eval "$(pyenv init -)" && eval "$(pyenv virtualenv-init -)"'

On shell, try:

$ my_anaconda

$ my_pyenv

Solution 2:

Inspired by answers, thank you. I have used a similar approach on MacOs:

# in my ~/.bash_profile
# Anaconda app is installed and initiated at the terminal start
# path to Anaconda: /Users/<USER>/opt/anaconda3/


switch_pyenv(){
    conda deactivate
    conda deactivate # in case you're not in base env
    eval "$(pyenv init -)"
    eval "$(pyenv virtualenv-init -)"
}

switch_conda(){
    conda activate base
    export PATH="/Users/<USER>/opt/anaconda3/bin:$PATH"
}


# quick check which python, pip
w(){
  which python
  which pip
  py -V
}

When I switch to an environment, I check 'where am i' with the shorthand w.