Is there a way to install Python version 2 on Mac with M3 chips?

Question

[xiaoleiusc]

Hi, All,

Is there a way to install Python version 2 on Mac with M3 chips?

Thanks,

Xiao

[Nitin Narwade]

Did you try installing it through Conda?

Regards,

Nitin N.

[xiaoleiusc]

Tried conda create --name env_py2 python=2.7.18 but failed with error below:

Collecting package metadata (current_repodata.json): done Solving environment: unsuccessful attempt using repodata from current_repodata.json, retrying with next repodata source. Collecting package metadata (repodata.json): done Solving environment: failed

PackagesNotFoundError: The following packages are not available from current channels:

• python=2.7.18

Current channels:

• https://conda.anaconda.org/bcbio/osx-arm64
• https://conda.anaconda.org/bcbio/noarch
• https://conda.anaconda.org/anaconda/osx-arm64
• https://conda.anaconda.org/anaconda/noarch
• https://repo.anaconda.com/pkgs/main/osx-arm64
• https://repo.anaconda.com/pkgs/main/noarch
• https://repo.anaconda.com/pkgs/r/osx-arm64
• https://repo.anaconda.com/pkgs/r/noarch
• https://conda.anaconda.org/conda-forge/osx-arm64
• https://conda.anaconda.org/conda-forge/noarch
• https://conda.anaconda.org/bioconda/osx-arm64
• https://conda.anaconda.org/bioconda/noarch

To search for alternate channels that may provide the conda package you're looking for, navigate to

https://anaconda.org

and use the search bar at the top of the page.

[Nitin Narwade]

A quick Google search gave me this solution, which might help.

[gernophil]

I think you need to enable the x86_64 packages and run them using Rosetta2. There are multiple options to to this. I have two different conda installations on my M1pro (one using arm64 one using x86_64) and I activate them separately to keep the package architectures separate. However, you can also allow x86_64 packages in arm64 environments: https://stackoverflow.com/questions/70205633/cannot-install-python-3-7-on-osx-arm64

Answer 1

[xiaoleiusc]

This is how I installed python2 on my MacOS Sonoma (14.5) with M3 chips.

1. brew install pyenv
2. pyenv install 2.7.18
3. pyenv init, and follow instructions to append the following to ~/.zprofile and ~/.zshrc
4. sudo nano ~/.zshrc, append the following:

    export PYENV_ROOT="$HOME/.pyenv" [[ -d $PYENV_ROOT/bin ]] && export
    PATH="$PYENV_ROOT/bin:$PATH" eval "$(pyenv init -)"

1. To exit nano, press “control + x”, the press “y”.
2. Refresh shell with exec "$SHELL"
3. Check installed python versions with pyenv versions
4. Choose a version to run locally or globally, for example, pyenv local 2.7.18 , pyenv global 3.12.4, or use system version with pyenv global system.