new_contents: x=int(raw_input('Enter your integer number(!not negative!):'))
  epsilon=0.01
  low=0.0
  high=x
  ans=(high+low)/2.0
  while abs(ans**2-x)>=epsilon:
      if ans**2 < x:
          low=ans
      else:
          high=ans
      ans=(high+low)/2.0
   
  print (str(ans) + ' is close to square root of ' + str(x))
  
subject: Create bisect_search.py