For python3 follow pep8 guidelines and The Zen Of Python
For the PEP8 Guidelines, the only exception is to use tabs instead of 4 spaces. This is for disk space and keeping moving between code easy.
The Zen of Python can be viewed by typing import this in the Python console
>>> import this
The Zen of Python, by Tim Peters
Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the temptation to guess.
There should be one-- and preferably only one --obvious way to do it.
Although that way may not be obvious at first unless you're Dutch.
Now is better than never.
Although never is often better than *right* now.
If the implementation is hard to explain, it's a bad idea.
If the implementation is easy to explain, it may be a good idea.
Namespaces are one honking great idea -- let's do more of those!
Original Source: Wikipedia
Designating development stage Some schemes use a zero in the first sequence to designate alpha or beta status for releases that are not stable enough for general or practical deployment and are intended for testing or internal use only.
It can be used in the third position:
- 0 for alpha (status)
- 1 for beta (status)
- 2 for release candidate
- 3 for (final) release