Bugs item #1476356, was opened at 2006-04-25 16:11
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Category: Python Library
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Dom Lachowicz (cinamod)
Assigned to: Nobody/Anonymous (nobody)
Summary: StringIO should implement __str__()
Initial Comment:
I was a bit surprised when I discovered that StringIO
didn't have a __str__() method, equivalent to
getvalue(). Calling str(stringio_object) gives the
following:
>>> import StringIO
>>> s = StringIO.StringIO("hello world")
>>> print "%s" % (str(s))
<StringIO.StringIO instance at 0x401ef08c>
I had some (perhaps dodgy code) code that did:
if isinstance(data, types.FileType):
return data.read()
else:
return str(data)
Since StringIO doesn't subclass any file type and
doesn't implement a __str__() method, I was getting
seemingly bogus results. This was trivially worked
around by adding another "isinstance(data,
StringIO.StringIO)" case, but it was surprising
nonetheless. Thanks.
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