str1=raw_input("String:")
str1=str1.replace("\'", "\\\'")
str1=str1.replace("\"", "\\\"")

#!/usr/bin/env python
# escaper.py
# a class to escape characters in strings
import re
 
class Escaper(object):
  def __init__(self, chars):
    self.pat = re.compile("[%s]" % re.escape(chars))
  def __call__(self, data):
    return self.pat.sub(lambda c: "\\"+c.group(0), data)
 
if __name__ == "__main__":
  esc = Escaper("\"'")
  esc2 = Escaper("oy ")
  mystring = '"monkey' + "'s" + ' cool"'
  print mystring
  print esc(mystring)
  print esc2(mystring)

"monkey's cool"
\"monkey\'s cool\"
"m\onke\y's\ c\o\ol"