cowlinator <cowlina...@gmail.com> added the comment: I would like to second the improved explanation of contextlib.contextmanager, and additionally point out another problem: A very important piece of information is missing from the documentation: how to return data from the contextmanager-wrapped function.
I had to go look up the source code, which had a wonderful explanation in the comments: https://gist.github.com/enuomi/1385336#file-contextlib-py-L56 In particular, note that @contextmanager def some_generator(<arguments>): yield <return_data> can be used to return <return_data> to the caller, via with some_generator(<arguments>) as <return_data>: print(return_data) This information is wholly and completely missing from the contextlib.contextmanager documentation. ---------- nosy: +cowlinator versions: +Python 2.7, Python 3.4, Python 3.7 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue22374> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
