Bugs item #1113984, was opened at 2005-02-01 14:47
Message generated for change (Comment added) made by cito
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Category: Parser/Compiler
Group: Python 2.4
Status: Closed
Resolution: Wont Fix
Priority: 5
Submitted By: Christoph Zwerschke (cito)
Assigned to: Nobody/Anonymous (nobody)
Summary: keywords in keyword_arguments not possible
Initial Comment:
Currently it is not possible to use keywords in
expressions of the type "keyword_arguments". Example:
d = {'fi': 1, 'if': 1}
d.update(fi = 2) # ok
d.update(if = 2) # error
If possible, this restriction should be removed.
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>Comment By: Christoph Zwerschke (cito)
Date: 2005-02-01 19:49
Message:
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user_id=193957
Maybe I should explain my motivation for making this request.
In Kid [http://kid-template.sf.net], a xml templating
language, it is possible to set xml attributes with a
Pythonic syntax, like this:
<p py:attrs="class=myclass, bgcolor=mycolor, id=173" />
This expression is dynamically evaluated. If
myclass="aclass" and bgcolor="blue", then this would produce
the following:
<p class="aclass" bgcolor="blue" id="173">
Internally, this is of course realized by creating a
dictionary that contains the attributes of the tag, and then
creating an update statement with the string in py:attrs as
argument.
The problem arises when one of the attributes is a Python
keyword, "class" being a particularly embarassing example.
My current solution is to parse the py:attrs expression
manually and mangle the names. If Python could handle Python
keywords here, it would be a whole lot easier and faster.
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Comment By: Raymond Hettinger (rhettinger)
Date: 2005-02-01 18:46
Message:
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user_id=80475
It's possible, but hard to implement and unwise in any case.
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