Implementing python2.7.5 and python3.4.3 coexistence on Windows XP

The python2.7.5 and python3.4.3 coexistence process records are implemented on Windows XP:

1. First install the python2.7.5 and python3.4.3, two versions of the installation sequence before and after;

2. Check the system environment variables for the existence of the following four variables, the missing is manually joined

C:\Python27;

c:\Python27\Scripts;

C:\Python34;

c:\Python34\Scripts;

(The Python installation path is c:python27, the environment variable is C:\python27;python installation path is d:python27, the environment variable is d:\Python27;)

3. Modify the Python.exe file name in the C:python27 directory called Python2.exe

4. Enter the cmd verification, enter Python at this time into the python3.4.3 interpreter, input python2 into the python2.7.5 interpreter

Implementing python2.7.5 and python3.4.3 coexistence on Windows XP