String changing on the fly

[Batista, Facundo]

[elie at flashmail.com]

#- My users are using other scripting launguage to write scripts. They
#- are used to write somthing like (keeping it simple)
#- T = 100
#- do_action ('It cost $T dollars')
#- 
#- where the above syntax ('It cost $T dollars') is interperted as ('It
#- cost 100 dollars').

>>> def do_action(s):
	print s
>>> T = 100
>>> do_action('It cost %s dollars' % T)
It cost 100 dollars

Only note that the string is not changed (strings are immutable in Python),
but a new string is created.

.	Facundo
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