========
qualname
Python module to emulate the __qualname__
attribute for classes and methods
(Python 3.3+) in older Python versions. See PEP 3155
__ for details.
__ https://www.python.org/dev/peps/pep-3155/
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Installation
::
pip install qualname
Usage
Assume these definitions:
::
class C:
def f():
pass
class D:
def g():
pass
In Python 3.3+, classes have a __qualname__
property::
C.qualname
'C'
C.f.qualname
'C.f'
C.D.qualname
'C.D'
C.D.g.qualname
'C.D.g'
Unfortunately, Python 2 and early Python 3 versions do not have an (obvious)
equivalent. qualname
to the rescue::
from qualname import qualname
qualname(C)
'C'
qualname(C.f)
'C.f'
qualname(C.D)
'C.D'
qualname(C.D.g)
'C.D.g'
Victory!
How does it work?
Glad you ask.
This module uses source code inspection to figure out how (nested) classes and
functions are defined in order to determine the qualified names for them. That
means parsing the source file, and traversing the AST (abstract syntax tree).
This sounds very hacky, and it is, but the Python interpreter itself does not
have the necessary information, so this justifies extreme measures.
Now that you know how it works, you'll also understand that this module only
works when the source file is available. Fortunately this is the case in most
circumstances.
License
BSD.
Feedback? Issues?
https://github.com/wbolster/qualname