Simultaneous installation of Anaconda2 and Anaconda3 under Windows

1. Install one as the main version, such as Install Anaconda2 First, select "Add PATH environment variable" when installing. My installation address is: E:\ProgramData\Anaconda3

2. Install another version of Python, install the note do not select "Add PATH environment variable", the most important is to install the address select Anaconda Another version of the folder "Envs" folder, such as I installed ANACONDA2 address: E:\ProgramData \anaconda3\envs\py2\

3. The installation is simple and then used. First Anaconda comes with two Ides (Jupyter and Spyder) that are recommended to be dragged to the desktop and named separately for ease of use. In addition, in CMD can be directly using the Python command to open the main version of the Ipython environment, activating another version of the command line is: Activate Py2 (Py2 replaced by the previous installation directory), the deactivation of the command is deactivate.

Reference (there are steps in the picture): http://blog.csdn.net/infin1te/article/details/50445217

Simultaneous installation of Anaconda2 and Anaconda3 under Windows