[issue29989] subprocess.Popen does not handle file-like objects without file descriptors

[Raphael Gaschignard]

Raphael Gaschignard added the comment:

I'm sorry for the confusion here, it turns out I was misinterpreting the results of my program and my workaround was not working. Like others have said, the subprocess code seems to rely on the existence of file descriptors

I would be pretty partial to the idea of having the subprocess's internal code catch OSError and raise a clearer error message like "subprocess can only operate on files with file descriptor support".

Having "complete" file object support would seem like a major win, but looking at the internals/OS support it seems like a hard thing to set up.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29989>
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