code: def quote_split(sep,string):
      
      if len(sep) != 1: raise Exception("Separation string must be one character long")
      retlist = []
      squote = False
      dquote = False
      left = 0
      i = 0
      while i < len(string):
          if string[i] == '"' and not dquote:
              if not squote:
                  squote = True
              elif (i+1) < len(string) and string[i+1] == '"':
                  i += 1
              else:
                  squote = False
          elif string[i] == "'" and not squote:
              if not dquote:
                  dquote = True
              elif (i+1) < len(string) and string[i+1] == "'":
                  i += 1
              else:
                  dquote = False            
          elif string[i] == sep and not dquote and not squote:
              retlist.append(string[left:i])
              left = i + 1
          i += 1
      retlist.append(string[left:])
      return retlist
docs: Splits the strings into pieces divided by sep, when sep in not inside quotes.