How to insert string in each match using RegEx iterator

Roy Smith roy at
Wed Jun 10 00:19:08 EDT 2009

In article 
<cb258e51-8c54-4b33-9b88-f23fc70a353a at>,
 "504crank at" <504crank at> wrote:

> By what method would a string be inserted at each instance of a RegEx
> match?
> For example:
> string = '123 abc 456 def 789 ghi'
> newstring = ' INSERT 123 abc INSERT 456 def INSERT 789 ghi'

If you want to do what I think you are saying, you should be looking at the 
join() string method.  I'm thinking something along the lines of:

groups = match_object.groups()
newstring = " INSERT ".join(groups)

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