Switch Python versions

Last modified: 27 March 2023

The procedures below explain how to switch Python versions by adding your custom environment in pip- and conda-based environments.

Switch Python versions in conda-based environment

  1. Open the notebook where you want to customize your environment.

  2. Open the Attached data tool from the left-hand sidebar.

  3. Click Notebook files to expand the list and open environment.yml.

  4. Edit the environment.yml file as shown in the examples below: 

    datalore-env-format-version: "0.2"
datalore-package-manager: "conda"
datalore-base-env: "py39"
dependencies:

  5. Create a new environment to specify the required Python version:

    1. Under Notebook files, click the New file icon.

    2. In the new file, add the content as shown in the example below. 

      channels:
  - conda-forge
  - defaults
dependencies:
  - python=3.9.10
  - pyyaml
  - protobuf
  - python-logstash
  - wrapt
  - ipykernel
  - ipython_genutils
  - jupyter_client
  - jedi

  6. Build a new virtual environment based on your custom environment file:

    1. Open the Environment tool from the left-hand sidebar.

    2. Click the Edit init.sh to install additional dependencies link.

    3. Add a command to build the virtual environment.

      warning

      Make sure you refer to the environment file you created in the previous step.

      /opt/anaconda3/bin/conda env create --name py39 --file py39env.yml

Switch Python versions in pip-based environment

  1. Open the notebook where you want to customize your environment.

  2. Open the Attached data tool from the left-hand sidebar.

  3. Click Notebook files to expand the list and open environment.yml.

  4. Edit the environment.yml file as shown in the examples below: 

    datalore-env-format-version: "0.2"
datalore-package-manager: "pip"
datalore-base-env: "my311"
dependencies:

  5. Build a new virtual environment based on your custom environment file:

    1. Open the Environment tool from the left-hand sidebar.

    2. Click the Edit init.sh to install additional dependencies link.

    3. Add a command to build the virtual environment.

      warning

      Make sure you refer to the environment file you created in the previous step.

      sudo apt-get update && sudo apt-get install -y python3.11 python3.11-venv
/usr/bin/python3.11 -m venv /opt/python/envs/my311
/opt/python/envs/my311/bin/python -m pip install ipykernel==5.5.3 ipython==7.31.1 ipython_genutils==0.2.0 jedi==0.17.2 lets-plot==3.0.0 aiohttp==3.8.3 pandas==1.5.3

note

As a result, every time the notebook is started, init.sh will be executed and the custom environment will be applied. Initializing this new environment may take a few minutes.