[issue22720] Obscure error w/ windows online-only file

[kg*2]

New submission from kg*2:

Windows has integrated onedrive into their os. A feature of onedrive is allowing users to browse files that aren't downloaded onto their computer. os.listdir will return the items, but when they are opened for read/writing it throws IOError[22]: invalid mode or file name. This error was not particularly helpful for this situation, as both the mode and the filename looked correct. Maybe a more specific error for this case would be help?

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components: IO
messages: 229941
nosy: kg*2
priority: normal
severity: normal
status: open
title: Obscure error w/ windows online-only file
type: enhancement
versions: Python 2.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue22720>
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