[issue4039] Add __enter__ and __exit__ methods to StringIO/cStringIO classes

[peppergrower]

New submission from peppergrower <mjjohnson.geo at yahoo.com>:

Currently, StringIO objects do not have __enter__ and __exit__ methods
associated with them.  As a result, the 'with' statement won't work
properly on StringIO objects in a construction like the following,
though they can otherwise be manipulated like files:

with obj.open_file(...) as f:
    ... 

(I brought up this behavior first on comp.lang.python,* and the above
example was borrowed from Hrvoje Niksic.)  To allow StringIO objects to
be used more interchangeably with actual file objects, could __enter__
and __exit__ methods be added?

Thanks,
peppergrower

*
http://groups.google.com/group/comp.lang.python/browse_thread/thread/6bdf65bce431e404/a5dc64f43147f4dd?lnk=gst

----------
components: Interpreter Core
messages: 74309
nosy: peppergrower
severity: normal
status: open
title: Add __enter__ and __exit__ methods to StringIO/cStringIO classes
type: feature request
versions: Python 2.5

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue4039>
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