New submission from samwyse:
I'm once again frustrated by a third-party module that only accepts filenames,
not already-opened file-like objects. This prevents me from passing in
StringIO objects or any of the standard file streams. Currently, *open()*
function accepts strings or (in Python 3.X) integers. I propose that *open()*
accept "file-like" objects, either returning them unchanged, or by returning a
wrapper object. While there are many different types of file-like objects,
they all have one characteristic in common: the presence of a .close() method.
A non-wrapped version of open() could be as simple as this:
try:
file = original_open(name, mode, buffering)
except TypeError:
if hasattr(name, 'close'):
return name
raise
Returning a wrapper object would be slightly more complicated, but would allow
the wrapped object to remain open even after the wrapper is closed.
----------
components: IO
messages: 171908
nosy: samwyse
priority: normal
severity: normal
status: open
title: Allow *open* to accept file-like objects
type: enhancement
versions: Python 2.7, Python 3.5
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Python tracker <[email protected]>
<http://bugs.python.org/issue16122>
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