Switching python2 and Python3 environments on MAC OS

Issue background

Python programming on Mac Book Pro requires a different Python environment to be used in different projects due to the installation of Python2 and PYTHON3 environments, which requires switching between the two environments.

System Configuration

• Mac OS Yosemite 10.10.3 (14d136)
• python2.7.9 python3.4.3

Solution Solutions

• Installing homebrew
• Installing Python2 and Python3 using homebrew
• Installing Virtualenv
• Create a virtual environment using VIRTUALENV
• Activating a virtual environment

Installing homebrew

Https://github.com/Homebrew/homebrew

Installing Python2 and Python3 using homebrew

$brew Install Python

$brew Install Python3

Installing Virtualenv

The corresponding version of VIRTUALENV will be installed automatically during the brew installation Python version two

Create a virtual environment using VIRTUALENV

http://simononsoftware.com/virtualenv-tutorial/

• Create a working directory

  mkdir virt_env

• Create a virtual environment on the working directory

  Virtualenv virt_env/virt1–python=python3.4.3
  Or
  Virtualenv virt_env/virt1–python=python2.7.9

• Activating a virtual environment

  SOURCE Virt_env/virt1/bin/activate

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.

Switching python2 and Python3 environments on MAC OS