code: def write_ulong(self, l):
          
          if type(l) not in python.int_types:
              raise TypeError('expected an int (got:%r)' % (type(l),))
  
          if not 0 <= l <= 4294967295:
              raise OverflowError("Not in range, %d" % l)
  
          self.write(struct.pack("%sL" % self.endian, l))
docs: Writes a 4 byte unsigned integer to the stream.
  
          @param l: 4 byte unsigned integer
          @type l: C{int}
          @raise TypeError: Unexpected type for int C{l}.
          @raise OverflowError: Not in range.