how to install python 2.7.15 and 3.6.5 on windows 10

Steps

1. Download Python 2.7.15. Install it with the default settings.
2. Download Python 3.6.5. Install it with the default settings.
3. Change the executable file name C:Python3python.exe to C:Python3python3.exe.

Install modules

• Python3

  python3 -m pip install pandas
  

• Python2

  python -m pip install pandas
  

Execute program

• Python3

  python3 test.py
  

• Python2

  python test.py
  

Reference

How to install Python 2.7 and 3.6 to Windows 10