code: def do_enable(self, arg):
          
          args = arg.split()
          for i in args:
              try:
                  bp = self.get_bpbynumber(i)
              except ValueError as err:
                  self.error(err)
              else:
                  bp.enable()
                  self.done_breakpoint_state(bp, True)
docs: enable bpnumber [bpnumber ...]
          Enables the breakpoints given as a space separated list of
          breakpoint numbers.