To avoid "dependency hell" and keep your Python 2.7 environment separate from Python 3, always use a virtual environment. Install virtualenv: pip install virtualenv
Install build dependencies: sudo apt install build-essential checkinstall libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev Download the source Gzipped tarball from Python.org.
pyenv install 2.7.18 pyenv global 2.7.18
Most modern Linux distributions have removed Python 2 from their default repositories. You can still install it using the "Universe" repository or by compiling from source. Using the Package Manager Update your package list: sudo apt update Install Python 2.7: sudo apt install python2.7 Check the version: python2.7 --version Compiling from Source
If the python command doesn't work in your terminal, follow these steps: Open the Start Menu and search for "Environment Variables." Click "Edit the system environment variables." Click "Environment Variables" in the bottom right. Under "System variables," find "Path" and click Edit. Add two new entries: C:\Python27\ and C:\Python27\Scripts\ . How to Install Python 2.7 on macOS
Create a Python 2.7 environment: virtualenv -p /usr/bin/python2.7 my_legacy_env Activate it: Windows: my_legacy_env\Scripts\activate Mac/Linux: source my_legacy_env/bin/activate
If you visit the official Python downloads page, the Python 2.7.18 installer (the final release) is still available.