code: def check_solution(self, tx_context, flags=None, traceback_f=None):
          
  
          for t in self.puzzle_and_solution_iterator(tx_context, flags=flags, traceback_f=traceback_f):
              puzzle_script, solution_stack, flags, sighash_f = t
  
              vm = self.VM(puzzle_script, tx_context, sighash_f, flags=flags, initial_stack=solution_stack[:])
  
              vm.is_solution_script = False
              vm.traceback_f = traceback_f
  
              stack = vm.eval_script()
              if len(stack) == 0 or not vm.bool_from_script_bytes(stack[-1]):
                  raise self.ScriptError("eval false", errno.EVAL_FALSE)
  
          if flags & VERIFY_CLEANSTACK and len(stack) != 1:
              raise self.ScriptError("stack not clean after evaluation", errno.CLEANSTACK)
docs: tx_context: information about the transaction that the VM may need
          flags: gives the VM hints about which additional constraints to check