Question

我最近切换到python的3.7.3版本，并且一直在尝试更新代码以适应新版本。在切换之前，pickle可以很好地转储和加载我发送的字典，但是现在它一直给我一个TypeError: can't pickle TaskStepMethWrapper objects错误搜索TaskStepMethWrapper可能表明它可能与asyncio有关，但是当我使用python 3.6时并没有显示此错误。

在这里输入我的代码

def load_guildlist(self):
    with open("guildlist.dadbot","rb") as sl:
        return pickle.loads(sl.read())

#edits the guildlist into an external file
def edit_guildlist(self,dictionary):
    with open("guildlist.dadbot","wb") as sl:
        #attempt to force the passing of a dictionary
        pickle.dump(dict(dictionary),sl)


#Registers the guild into the guildlist
async def on_guild_join(self,guild):
    #Setup an initial prefix for flexible changing later
    #Check to see if guildlist is empty or not(may only ever run once)
    try:
        self.guildlist = self.load_guildlist()
    except EOFError:
        self.guildlist = {}
        self.edit_guildlist(self.guildlist)
    #Stores a random prefix for the guild so it can be changed later
    #Should allow for guilds to have prefix preferences
    #Also sets guild preferences and statuses 
    if guild not in self.guildlist:
        #New guild
        self.guildlist[guild]={}
        self.guildlist[guild]["prefix"] = genPrefix()
        self.guildlist[guild]["voice_channel"] = "all"
        self.edit_guildlist(self.guildlist)

在这里进行追溯：

Ignoring exception in on_guild_join
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/discord/client.py", line 251, in _run_event
    await coro(*args, **kwargs)
  File "main.py", line 68, in on_guild_join
    self.edit_guildlist(self.guildlist)
  File "main.py", line 48, in edit_guildlist
    pickle.dump(dict(dictionary),sl)
TypeError: can't pickle TaskStepMethWrapper objects
Ignoring exception in on_message
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/discord/client.py", line 251, in _run_event
    await coro(*args, **kwargs)
  File "main.py", line 80, in on_message
    self.guildlist = self.load_guildlist()
  File "main.py", line 42, in load_guildlist
    return pickle.loads(sl.read())
EOFError: Ran out of input

为什么python pickle无法在3.7版中转储字典

0 个答案: