New submission from Thomas Viehmann <tv.python....@beamnet.de>:
Hello, thank you for Python! In IPython (or Jupyter), `inspect.getsource` is able to retrieve the source code for functions but not classes. The fundamental reason is that for functions, a "filename" (input reference rather) is available via fn.__code__.co_filename, while for classes, there is no equivalent (and __module__ is __main__, so no "filename" there). This could be helped by providing a "__filename__" (or however named) attribute in classes. Some digging in the Python code suggests that Python/bltinmodule.c might be a good place to resolve this, namely in function builtin___build_class__. In there, there is the func object and so ((PyCodeObject*) PyFunction_GET_CODE(func))->co_filename has the filename. Then one would copy that to an appropriate item in the namespace ns. I do have a patch (against python 3.6), but as this is my first attempt at digging in the internals, it is probably more than just a bit raw (I see test failures in test_dbm test_lib2to3 test_pydoc test_site, at least test_pydoc is due to the patch). Best regards Thomas ---------- components: Interpreter Core, Library (Lib) files: class-filename.diff keywords: patch messages: 319274 nosy: t-vi priority: normal severity: normal status: open title: enable discovery of class source code in IPython interactively defined classes type: enhancement versions: Python 3.8 Added file: https://bugs.python.org/file47638/class-filename.diff _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue33826> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
