[ python-Bugs-1467929 ] %-formatting and dicts

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Bugs item #1467929, was opened at 2006-04-10 21:39
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Category: Python Interpreter Core
Group: Python 2.5
Status: Open
Resolution: None
Priority: 5
Submitted By: M.-A. Lemburg (lemburg)
Assigned to: Nobody/Anonymous (nobody)
Summary: %-formatting and dicts

Initial Comment:
This looks like a bug in the way the %-formatting code
works or is it a feature ?

>>> '%s %(a)s' % {'a': 'xyz'}
"{'a': 'xyz'} xyz"

>>> u'%s %(a)s' % {'a': 'xyz'}
u"{'a': 'xyz'} xyz"

Note that both strings and Unicode are affected.

Python 2.3 and 2.4 also show this behavior.

I would have expected an exception or the %-formatter
simply ignoring the first %s.




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