We are using python3

There are more python2, but it is estimated that there will be more and more python3 in the future

It depends on how old the company is :(

Linux comes with 2, and many services depend on 2

2.6 and 2.7 are relatively supported. There are often <python3,;
on github Wait a moment

Python2

New students can go directly to level 3

There has been a similar problem on someone, you can refer to it
http://www.zhihu.com/question/24549965

As can be seen from open source projects, the proportion of new projects based on or supporting Python3 has greatly increased.
Well-known open source projects generally support python2.7 and python3+, but there are exceptions. For example, Scrapy only supports Python2.7.

If it is a new project and has no dependencies on existing projects, it is recommended to choose Python3.3+.
Otherwise, choose Python2.7 (pre-2.7 is basically abandoned)

I am using 2.7, I think 2.7 is more suitable