Print out what the attributes are for copy pasting for Sphinx documentation

sphinxify_vars.py

"""
In the docstring for a class the variables can be defined with ``:var xxx:``,  ``:ivar xxx:`` and  ``:cvar xxx:``.
This prints a block for a given class instance to make it easier.
Dynamic attributes will be marked as class variables.
Private attributes will not show.

NB. Writing  ``#:`` is probably easier and saner, but has to be done during coding...
"""

def sphinxify_vars(obj):
    ivars = set(dir(obj)) - set(dir(obj.__class__))
    for key in sorted(dir(obj)):
        if key[0] == '_':
            continue
        if getattr(obj, key).__class__.__name__ in ('type', 'builtin_function_or_method', 'method-wrapper', 'method'):
            continue
        if key in ivars:
            print(f':ivar {key}:')
        else:
            print(f':cvar {key}:')
        print(f':vartype {key}: {getattr(obj, key).__class__.__name__}')