How to get the python version number in python

Recently I have been thinking about how to use python for automated testing, but there has been no progress. I feel that ruby ​​is used more in domestic automated testing. One thing I want to do now is how to use python to test web programs, including web page inspection. Unit testing is a very important concept in large enterprise architecture. This concept is very popular in back-end code, but it is not very common to do unit testing in front-end JS. I wonder if python can be useful in this place. Currently, you can use python to do it. Do interface testing. Today, a classmate asked me how to get the version number of python in python. He would process it according to different versions. Here is the relevant code

#!/usr/bin/python
import platform
print platform.python_version()

#!/usr/bin/python
import sys
print sys.version 
print sys.version_info