[Tutor] Help with multiple substitution

[vankayala sailakshman]

Hi All, 

	
	
	

Help needed to write a python script!!!
   Iam a python newbie and my problem
is doing multiple substitution in a text file using Python regular
expressions. Here is my following data, I need to chop of all the
extensions that are given in the following list and replace with
empty string in their position. I have tried to solve for the past two days but couldn't succeed. Any help would be appreciated. Thanks
in advance.Sai....




for example, for  “abc22035.pr.1” 
i need to get  “abc22035”



chopset = ['.p', '.pr', '.prp',
'.prpp', '.ps', '.psp', '.pspp', '.s', '.p.1','.pr.1', '.prp.1',
'.prpp.1', '.ps.1', '.psp.1','.pspp.1', '.s.1']



abc22035.pr 

 abc22035.pr.1		abc21409
.ps.1
 abc21409.pr.1		abc21154

 abc21154.pr.1			abc07584_EAOEA

 abc07584_EAOEA.ps.1	abc20991.pr

 abc20991.ps.			abc21156

 abc21156.ps.1		abc21409

 abc21409.ps. 			abc21156

 abc21156.pr.1			abc21408

 abc21408.ps.1		abc21370.psp

 abc21370.pr.1		abc21370

 abc21370.ps.1		abc22036

 abc22036.pr.1		abc21154

 abc21154.ps.1		abc22036.prpp

 abc22036.ps.1		abc20991

 abc20991.pr.1		abc21772

 abc21772.pr.1		abc21408

 abc21408.pr.1		abc07584_EAOEA

 abc07584_EAOEA.pr.1	abc21065





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