Python之局部变量错误，其中变量是导入的模块

所以，我最近一直在研究 IRC 机器人。它存储最后一次有人做某事作为反垃圾邮件功能的一部分。它用于初始化 WHO 回复中的用户列表，我一直在使用 RPL_NAMREPLY。

它几乎可以工作。但是，我有一个看起来很奇怪的问题..

import time 
 
# ... 
 
    def irc_unknown(self, prefix, command, params): 
        """Handle packets that aren't handled by the library.""" 
 
        # Prefix: asimov.freenode.net 
        # Command: RPL_BANLIST 
        # Params: ['MCBans_Testing', '#mcbans-test', 'a!*@*', 'gdude2002!g@unaffiliated/gdude2002', '1330592882'] 
 
        self.runHook("unknownMessage", {"prefix": prefix, "command": command, "params": params}) 
 
        if command == "RPL_BANLIST": 
            channel = params[1] 
            mask = params[2] 
            owner = params[3] 
            time = params[4] 
 
            if channel not in self.banlist.keys(): 
                done = {"done": False, "total": 1} 
                banmask = {"owner": owner.split("!")[0], "ownerhost": owner, "time": time, "mask": mask, 
                           "channel": channel} 
                done[mask] = banmask 
                self.banlist[channel] = done 
 
            else: 
                if not self.banlist[channel]["done"]: 
                    banmask = {"owner": owner.split("!")[0], "ownerhost": owner, "time": time, "mask": mask, 
                               "channel": channel} 
                    self.banlist[channel][mask] = banmask 
                    self.banlist[channel]["total"] += 1 
 
                else: 
                    done = {"done": False, "total": 1} 
                    banmask = {"owner": owner.split("!")[0], "ownerhost": owner, "time": time, "mask": mask, 
                               "channel": channel} 
                    done[mask] = banmask 
                    self.banlist[channel] = done 
 
        elif command == "RPL_ENDOFBANLIST": 
            channel = params[1] 
 
            if channel in self.banlist.keys(): 
                self.banlist[channel]["done"] = True 
            else: 
                self.banlist[channel] = {"done": True, "total": 0} 
 
            self.prnt("|= Got %s bans for %s." % (self.banlist[channel]["total"], channel)) 
 
            if self.is_op(channel, self.nickname): 
                stuff = self.banlist[channel].keys() 
                stuff.remove("done") 
                stuff.remove("total") 
 
                for element in stuff: 
                    if stuff == "*!*@*": 
                        self.send_raw("KICK %s %s :Do not set such ambiguous bans!" % ( 
                        channel, self.banlist[channel][element]["owner"])) 
                        self.send_raw("MODE %s -b *!*@*" % channel) 
                        self.send_raw( 
                            "MODE %s +b *!*@%s" % (channel, self.banlist[channel][element]["ownerhost"].split("@")[1])) 
                    else: 
                        self.checkban(channel, element, self.banlist[channel][element]["owner"]) 
 
        elif command == "RPL_NAMREPLY": 
            me, status, channel, names = params 
            users = names.split() 
            ranks = "+%@&~" 
 
            if not channel in self.chanlist.keys(): 
                self.chanlist[channel] = {} 
 
            for element in users: 
                rank = "" 
 
                for part in ranks: 
                    if part in element: 
                        rank = rank + part 
                    element = element.strip(part) 
 
                done = { 'server': prefix, 
                         'status': rank, 
                         'last_time': float( time.time() - 0.25 ) } 
                self.chanlist[channel][element] = done 
 
            print "Names for %s%s: %s" % (status, channel, names) 
 
        elif command == "RPL_ENDOFNAMES": 
            me, channel, message = params 
            ops = 0 
            voices = 0 
            opers = 0 
            aways = 0 
 
            for element in self.chanlist[channel].values(): 
                status = element["status"] 
                if "+" in status: 
                    voices += 1 
                if "@" in status: 
                    ops += 1 
                if "*" in status: 
                    opers += 1 
                if "G" in status: 
                    aways += 1 
            print("|= %s users on %s (%s voices, %s ops, %s opers, %s away)" % ( 
            len(self.chanlist[channel]), channel, voices, ops, opers, aways)) 
            print "[%s] (%s) %s" % (prefix, command, params) 
 
        else: 
            print "[%s] (%s) %s" % (prefix, command, params) 

有了它，我得到以下错误..

  File "C:\Users\Gareth\Documents\GitHub\McBlockit---Helpbot\system\irc.py", line 1422, in irc_unknown 
    done = {"server": prefix, "status": rank, "last_time": float(time.time() - 0.25)} 
exceptions.UnboundLocalError: local variable 'time' referenced before assignment 

如您所见，我在文件顶部导入了时间。该代码在另一个函数中运行良好。有什么想法吗？

请您参考如下方法:

您在函数的 if 语句中定义了一个局部变量 time:

        time = params[4] 

因为它在 if 语句中，没有任何东西分配给它，但由于该变量，导入的 time 模块在您的函数中不可用。

重命名该变量以解决冲突。