Python's version and which version of python to use.

Python has two versions on python.org downloads:

https://www.python.org/downloads/


3.6.0 and 2.7.13

3.6.0 is the most recent one.  But 90% of the python code in industry is written in 2.7.X. And there are a lot of modules of python in python 2.

On this python primer, page 4, it also said that a lot of python code was written in python 2.


https://hplgit.github.io/primer.html/doc/pub/half/book.pdf

On youtube, currently, most of the python tutorial is about python 3.

For example, I like the tutorial from this channel, their python tutorial is about python 3.

https://www.youtube.com/watch?v=BTzav965P7w&t=2650s