Anaconda3 installation and multi-version python configuration

Overview

Anaconda is an independent package management system that integrates package management, virtual environment, python and common extension packages.
conda is a command line tool provided in anaconda, similar to pip
Anaconda's environment management can provide independent environments for different versions of python.

Anaconda3 download

https://www.anaconda.com/distribution/

Precautions in Anaconda3 installation,

• Install for option.
  • Just me is installed under the user account
  • All users can use all user accounts on the computer
• Advanced options
  • Whether to add anaconda to the system environment variables
  • Default python version
• Verify installation
  • win10, start Anaconda Prompt
  • enter:conda -V
  • Return the Anaconda version number, that is, the installation is successful.

The current python version of anaconda3 is 3.7

Install python2.7 version

• Open Anaconda3 Powershell Prompt
• Enter conda create -n python27 python=2.7. Create an environment named python27 and install the latest version of python2.7.
• conda info -eCheck the installed environment. There should be only base and python27 at this time.
• conda activate python27 Switch to python27 environment
• python --versionCheck the current python version. "Python 2.7.16" is displayed
• Return to the base environment,conda activate

Configure Anaconda in VSCode

• Open Visual Studio Code

• ctrl+, Shortcut key to open setting,

  • Enter in the search bar python.condapathand fill in the Anaconda3 installation path. For example: "D:\anaconda3"
  • Enter the search bar python.venvpathand fill in the envs directory under Anaconda3. For example: "D:\anaconda3\envs"

• Restart vscode, at this time, select the interpreter column should be able to display python3.7 and python2.7.