如何使用Discord.py循环功能 [英] How to loop a function using Discord.py

问题描述

我的目标是切换在嵌齿轮内部调用函数时的循环。我希望函数采用文件名的参数。该函数将打印从txt文件读取的行。我希望这个循环直到我调用另一个取消它的函数为止。

My goal is to "toggle" a loop when a function is called inside of a cog. I want the function to take the argument of a filename. The function will print the line it has read from a txt file. I want this to loop until I call another function that cancels it.

Discord py使用异步，我只是不知道如何在一个函数内操作循环。

Discord py uses async, I just do not know how to operate a loop within a function.

示例：

class Looptest:

   def __init__(self, client):

        self.client = client

    #This is responsible for playing the loop.
   async def play_loop(self, filename):

        filename = (path_to_txtfile)
        
        #loop the following code
        with open(filename, 'r') as f:
            line = f.readlines()
             print(line)

async def stop_loop(self):
    #stop the loop
    

推荐答案

您可以使用任务，由discord.py API提供。

You can use a task, provided by the discord.py API.

from discord.ext import commands, tasks

class LoopCog(commands.Cog):
    def __init__(self, bot):
        self.bot = bot
        # whatever else you want to do

    @tasks.loop(seconds=1)
    async def test_loop(self, filename):
        # do your file thingy here

    @commands.command(name="start_loop"):
    async def start_loop(self,*, filename: str):
        # check that the file exists
        self.test_loop.start(filename)
    @commands.command(name="stop_loop"):
    async def stop_loop(self):
        self.test_loop()

def setup(bot):
    bot.add_cog(LoopCog(bot))

由于我目前无法进行测试，因此上面可能存在一些错误，但是循环很麻烦就是这样。

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