ignoring some placeholders in string formatting

Steven D'Aprano steven at REMOVE.THIS.cybersource.com.au
Thu Feb 11 03:11:38 CET 2010

On Thu, 11 Feb 2010 14:25:10 +1300, Michal Ludvig wrote:

> Hi all,
> when I've got a string, say:
> URL="http://xyz/blah?session=%(session)s&message=%(message)s"
> is it possible to fill in only 'session' and leave "%(message)s" as is
> when it isn't present in the values dict?

No, but instead see string templates:



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