[issue12955] urllib2.build_opener().open() is not friendly to "with ... as:"

[Valery Khamenya]

New submission from Valery Khamenya <khamenya at gmail.com>:

The following intuitive construction

with urllib2.build_opener().open() as:
    ...

leads to AttributeError: addinfourl instance has no attribute '__exit__'

http://docs.python.org/library/urllib2.html says almost nothing about concept of closing.

Could it be possible to add a canonical "with ... as:" example for urllib2.build_opener() ?

Thanks,
Valery

----------
assignee: docs at python
components: Documentation, IO, Library (Lib)
messages: 143836
nosy: Valery.Khamenya, docs at python
priority: normal
severity: normal
status: open
title: urllib2.build_opener().open() is not friendly to "with ... as:"
type: resource usage
versions: Python 2.6, Python 2.7, Python 3.1, Python 3.2, Python 3.3, Python 3.4

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12955>
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