Python File Reading and Writing

This is a small program i have written to read a contents from a INPUT FILE containing (+1000 Lines ) and writing simultaneously to another file. ( it works fine )


1.---- QUESTION:-
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I need to have the same fomat for the written file as of the Reading file ( But the FORMAT is LOST ------ I Dont Know why ?????
2.--------QUESTION:-
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if want to make a stop at the middle of the file and insert some data to the file and then again  perfrom the read  and the write operation( HOW CAN I DO THAT)........


import sys
import os
import stat

def ReadFile():
      try:
            input = open('c:\Abafiles\Job-1.inp','r')
            out = open("exampleWrite.inp", "w")
            s = input.readlines()
            InputTuple = []
            for line in s:
                  singleLine = line.rstrip()
                  InputTuple.append(singleLine)
                  out.write(singleLine)
            print len(InputTuple)
            
      except IOError, (errno, strerror):
            print "I/O error(%s): %s" % (errno, strerror)
      except ValueError:
            print "Could not convert data to an integer."
      except:
            print "Unexpected error:", sys.exc_info()[0]
            raise
      input.close()
      out.close()
ReadFile()
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