Execute Python Online

def find_nth(haystack, needle, n):
    start = haystack.find(needle)
    print "Haystack"
    while start >= 0 and n > 1:
        
        start = haystack.find(needle, start+len(needle))
        print "start :"+str(start)
        print "N: " + str(n)
        n -= 1
    return start
   
def parseSQLFn(inSentence):
  
  sentence = inSentence
  numOpen = sentence.count('(');
  print "sentence count"+str(numOpen)
  ctrOpen = 0
  i = 0
  subSentence = sentence
  missingStr = 0
  finSentence = ''
 
  if numOpen == 0:
    finSentence = inSentence
    return finSentence
 
  while i < numOpen*2:
    print 'i'+ str(i)
    varOpen = subSentence.find('(')
    varClose = subSentence.find(')')
    print 'VAR OPEN'+str(varOpen)
    print 'Var Close'+str(varClose)
   
    # Break condition 1: Open paranthesis ends
    if varOpen < 0:
      j = 0
      
      while j < ctrOpen:
        # Get the End of str
        endOfStr = find_nth(subSentence,')',ctrOpen)
        print "EoS "+str(endOfStr)
        endOfStr+= missingStr + i + 1
        print "EoS "+str(endOfStr)
        ctrOpen=0
     
      finSentence = sentence[:endOfStr]
      # print("finSentence = " + finSentence)
      print "Fin String "+finSentence
      return finSentence
     
    if varOpen < varClose:
      subSentence = subSentence[varOpen+1:]
      print "Subsentence " + subSentence
      missingStr = missingStr + varOpen
      print "Missing str "+str(missingStr)
      ctrOpen+=1
     
    elif varOpen > varClose:
      subSentence = subSentence[varClose+1:]
      print "Subsentence " + subSentence
      missingStr = missingStr + varClose
      print "Missing str "+str(missingStr)
      ctrOpen-=1
      
    i=i+1
   
    # break condition 2: All paranthesis closed but have some tail
    if ctrOpen == 0:
      print "IN CtrOpen"
      finSentence = sentence[:missingStr+i]
      print("finSentence = " + finSentence)
      return finSentence

parseSQLFn('''to_char(sd_sdfdfc(ASS(ddnbcjdbsc_snsjdc),jdchuiadcu)))hguyuy''')