[Tutor] expand

[kumar s]

Dear group, 
  
I am looking into  a code by a friend of mine.  

x = re.comile("XXXX")
x_match = x.search(string)
y = int(x_match.expand("\\3"))
y1 = int(x_match.expand("\\5"))

I did not understand what .expand is doing here. What
is it doing. is it same as expandtabs method in string
module?
Can any one help me please. 
thank you

SK


		
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