[issue30942] Implement lwalk(levelwalk) function on os.py

[André Rossi Korol]

New submission from André Rossi Korol:

I forked cpython and implemented an lwalk function on os.py. The lwalk funtion behaves exactly like walk(), except that it recurses only to a certain level of depth that can be selected by the user. More information on the lwalk function can be found on "os.py" in my cpython fork. It worked fine when I tested the funtion in a local virtual environment, but when I installed Python 3.7 with my lwalk function implemented in os.py I get an error when I try to test it in my recent Python installation: "TypeError: 'NoneType' object is not iterable".
I'd like to know where else I need to add info about my lwalk function so it can be correctly used in a fresh Python installation and so than I can send a Pull Request.

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components: Library (Lib)
files: os.py
hgrepos: 369
messages: 298458
nosy: andrekorol
priority: normal
severity: normal
status: open
title: Implement lwalk(levelwalk) function on os.py
type: enhancement
versions: Python 3.7
Added file: http://bugs.python.org/file47017/os.py

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<http://bugs.python.org/issue30942>
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