What's the difference on docstrings with triple SINGLE quotes and triple DOUBLE quotes?

Question

I was just wondering what is the difference between two ways of writing Python Docstrings (__doc__):

1. three single quotes:

   \'\'\         
   
   
           

Answer 1

The informational document PEP 257 -- Docstring Conventions recommends to use """triple double-quotes""" for consistency, and all their examples show the same:

For consistency, always use """triple double quotes""" around docstrings. Use r"""raw triple double quotes""" if you use any backslashes in your docstrings. For Unicode docstrings, use u"""Unicode triple-quoted strings""".

Whether to use single quotes or double quotes is only a stylistic issue in practice. There will be no difference in formatting when generating and publishing docs from these strings.