[Tutor] question on string

Bob Gailer bgailer at sbcglobal.net
Mon Aug 1 20:20:16 CEST 2005

At 10:42 AM 8/1/2005, Gilbert Tsang wrote:
>Hi there,
>I would like to construct some string objects using the cprintf-style format:
>command_string = "diff -u %s %s > %s.patch" % ( src, dst, file )
>Of course it is illegal in python

How did you conclude that? "diff -u %s %s > %s.patch" % ( src, dst, file ) 
is a Python expression, and will do what you want!

See http://docs.python.org/lib/typesseq-strings.html for the official 

>but I couldn't figure out a way to
>construct strings with that kind of formatting and substitution.
>I have been looking and couldn't discover string constructor such as
>command_string = string( "diff -u %s %s > %s.patch" % ( src, dst, file ) )
>  From the documentation on docs.python.org, the closest is string
>Template (but my python installation doesn't come with this module). Any
>insights on initializing string in this manner?
>Thanks, Gilbert.
>Tutor maillist  -  Tutor at python.org

Bob Gailer
phone 510 978 4454  
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