How do I use pyenv to manage multiple python versions? How do I install it? How do I automate installation?
https://pages.charlesreid1.com/how-do-i-pyenv
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78 lines
1.9 KiB
78 lines
1.9 KiB
6 years ago
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# How Do I Pyenv?
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A how-to guide for using pyenv, a program to help you install and manage
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multipe versions of Python side-by-side in an easy and pain-free way!
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HTML pages for this tutorial (you are here): <https://pages.charlesreid1.com/how-do-i-pyenv>
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Source code for this tutorial: <https://git.charlesreid1.com/charlesreid1/how-do-i-pyenv>
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Mirror on Github: <https://github.com/charlesreid1/how-do-i-pyenv>
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# Installing pyenv
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Start by running the pyenv installer (see [pyenv-installer](https://github.com/pyenv/pyenv-installer)):
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```
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# Install pyenv
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curl -L https://raw.githubusercontent.com/pyenv/pyenv-installer/master/bin/pyenv-installer | bash
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```
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This will install all pyenv-related things to `~/.pyenv`.
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Next, add pyenv's bin directory to $PATH (should already be in ~/.bash_profile but just in case):
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```
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echo 'export PATH="~/.pyenv/bin:$PATH"' >> ~/.bash_profile
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```
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Now you can log out and log back in, or do `source ~/.bash_profile`, and
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check that the following command returns the location of pyenv:
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```
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$ which pyenv
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```
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# Installing conda
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Now we set the version of python we wish to install. We will install miniconda 4.3.30 for python 3:
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```
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CONDA="miniconda3-4.3.30"
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```
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First tell pyenv to install this version of conda (this will download and build it):
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```
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pyenv install $CONDA
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```
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Next, tell pyenv that you want this to be the default version of pyenv Python:
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```
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pyenv global $CONDA
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```
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Finally, if you want to put this verison of Python on your path, you should run:
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```
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eval "$(pyenv init -)"
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```
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Now you can check to make sure you have the pyenv-installed version of conda:
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```
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which conda
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conda --version
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python --version
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```
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If you want to make this version of Python the one on your path, and you want
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that to happen *always*, you can add the above line to your `~/.bash_profile`:
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```
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echo 'eval "$(pyenv init -)"' >> ~/.bash_profile
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```
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