Install the following packages as an administrator. They will be needed when building python.
sudo apt install build-essential libbz2-dev libsqlite3-dev libreadline-dev libssl-dev zlib1g-dev libgdbm-dev liblzma-dev uuid-dev libffi-devAs your user, download and install pyenv:
curl -L https://github.com/pyenv/pyenv-installer/raw/master/bin/pyenv-installer | bashPyenv has to be enabled adding the following lines at the end of <USER_HOME_DIRECTORY>/.bashrc:
export PATH="<USER_HOME_DIRECTORY>/.pyenv/bin:$PATH"
eval "$(pyenv init -)"
eval "$(pyenv virtualenv-init -)"As a final step, logout & login to be able to use pyenv.
This step must be executed only once per each python version you need.
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install the prerequisites as indicated in the first section
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Build your python version (e.g. 3.7.5):
pyenv install 3.7.5
This will make available a python 3.7.5 in your user environment
It is good practice to develop each project in its dedicated virtualenv (https://virtualenv.pypa.io/en/latest/). A virtualenv can be created in many ways. We'll use pyenv.
- Create a virtual environment:
pyenv virtualenv 3.7.5 yourproject-venv
This will create a dedicated virtualenv for your project in an hidden directory somewhere.
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Clone your code (or create an empty repo if you are starting from scratch).
cd ~ git clone http://host/yourproject
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instruct pyenv to always activate the virtualenv you created.
cd ~/yourproject pyev local yourproject-venv
From that moment on, every time you'll go inside ~/yourproject, the dedicated virtualenv will be activated.
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install the libraries you need. From within the virtualenv, you are free to install all the packages you need.
Install a single package:
cd ~/yourproject pip install requests
Install from the requirements file, if exists
cd ~/yourproject pip install -r requirements.txt
Save the list of your dependencies in requirements.txt. You may want to commit this file.
cd ~/yourproject pip freeze > requirements.txt