Raphael Gaschignard added the comment:
that error is what is raised by StringIO (subclassing OSError), other file-like
objects could just be raising OSError (according to the file object spec
described in the documentation for the io module).
Fixing documentation would already be helpful
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
Raphael Gaschignard added the comment:
the subprocess module has code to handle file objects that don't use file
descriptors. It's not that file descriptors are necessary for the parameter,
but that the way POpen is trying to detect "no file descriptor support" is
through "fi
New submission from Raphael Gaschignard:
>From the documentation of the io module:
fileno()
Return the underlying file descriptor (an integer) of the stream if it exists.
An OSError is raised if the IO object does not use a file descriptor.
However, when passing a file-like object with
