Returns the function’s documentation string, or None if unavailable.
type.func_doc
#TODO
#TODO
The func_doc attribute is writeable.
>>> def foo():
... ''' This is my docstring.'''
... pass
...
>>> foo.func_doc
' This is my docstring.'>>> def foo():
... ''' This is my docstring.'''
... pass
>>>
>>> foo.func_doc = 'foobar'
>>> foo.func_doc
'foobar'#TODO