Bot导致claimer.py中的双重帖子

Question

在我的机器人上，我继续使用我的声明命令，但它一直让机器人在def claimer中发布两条消息。这是代码：

   def claimer(user, name, room):
     if user.lower() == name.lower():
       room.message("Pfft. You can't catch yourself.")
     elif name.lower() not in room.usernames:
       room.message("You can't capture %s they are not here." % name.title())
     else:
       if not user in claim.claimDB:
         claim.claimDB[user] = []
       num = len(claim.claimDB[user])
       if claim.limit(num) == True:
         room.message("You have reached your limit on captures %s. You must release some people in order to catch %s" % (user.title(), name.title()))
       else:
         for a, b in claim.claimDB.items():
           if name.lower() in b:
             room.message("%s has already been caught by %s." % (name.title(), a.title())) 
           else:
             escapechance = random.choice([True,True,True,False])
             if escapechance == True:
               claim.claimDB[user] = claim.claimDB[user]+[name]
               room.message("//Pokeball wiggles three times before stopping// You have successfully captured %s! \o/" % name.title()) <----this message.
             else:
                room.message("Failed to capture them")<----- this one too at the same time.

在claim.claimDB.items（）中的for a，b：如果b：中的name.lower（）是为了防止同一名称出现在claim.claimDB.items（）中的b中，而是导致那些弹出两条消息并再次在文件中放置相同的名称。