什么时候那个专门刷题的软件才能发布？

老师为什么显示错误？

from multiprocessing import Process, Queue

from time import sleep

class MyProcess(Process):

    def __init__(self,name,mq):

        Process.__init__(self)

        self.name = name

        self.mq = mq

    def run(self):

        print(f"Process:{self.name},start")

        print(f"get Data:{self.mq.get()}")

        sleep(3)

        print(f"Process:{self.name},end")

if __name__ == '__main__':

    mq = Queue()

    mq.put("1")

    mq.put("2")

    mq.put("3")

    p_list = []

    for i in range(3):

        p = MyProcess(f"p{i}",mq)

        p_list.append(p)

    for p in p_list:

        p.start()

        #p.join()

为什么要加join，不然会报错，mac

Traceback (most recent call last):

  File "<string>", line 1, in <module>

  File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/spawn.py", line 116, in spawn_main

Traceback (most recent call last):

  File "<string>", line 1, in <module>

  File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/spawn.py", line 116, in spawn_main

        exitcode = _main(fd, parent_sentinel)exitcode = _main(fd, parent_sentinel)

  File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/spawn.py", line 126, in _main

  File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/spawn.py", line 126, in _main

    self = reduction.pickle.load(from_parent)

      File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/synchronize.py", line 110, in __setstate__

self = reduction.pickle.load(from_parent)

  File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/synchronize.py", line 110, in __setstate__

    self._semlock = _multiprocessing.SemLock._rebuild(*state)

FileNotFoundError: [Errno 2] No such file or directory

    self._semlock = _multiprocessing.SemLock._rebuild(*state)

FileNotFoundError: [Errno 2] No such file or directory

Traceback (most recent call last):

  File "<string>", line 1, in <module>

  File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/spawn.py", line 116, in spawn_main

    exitcode = _main(fd, parent_sentinel)

  File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/spawn.py", line 126, in _main

    self = reduction.pickle.load(from_parent)

  File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/multiprocessing/synchronize.py", line 110, in __setstate__

    self._semlock = _multiprocessing.SemLock._rebuild(*state)

FileNotFoundError: [Errno 2] No such file or directory

我的在sudoers中写入了还是不能执行sudo命令

里面这三个变量，users，username，userpwd报红，是因为没有连接到我的数据库嘛？？？

老师，pycharm有这样的插件吗，一下子就敲好了

注释用双斜杠可以吗？

井号注释后面必须有一个空格吗？

为什么html写好后开始运行后，没有任何信息

package com.itbaizhan;

import java.io.*;

public class TestDataStream {
    public static void main(String[] args) {
        //创建字符输出流对象和文件字符输出流对象
        try(DataOutputStream dos = new DataOutputStream(new FilterOutputStream("d:/data"));
        //创建字节输入流对象与文件字节输入流对象
            DataInputStream dis = new DataInputStream(new FileInputStream("d:/data"))){
                //将如下数据写入到文件中
                dos.write('a');
                dos.writeInt(10);
                dos.writeDouble(Math.random());
                dos.writeBoolean(true);
                dos.writeUTF("北京尚学堂");
                //直接读取数据：读取的顺序要与写入的顺序一致，否则不能正确读取数据。
                System.out.println("char:"+dis.readChar());
                System.out.println("Int:"+dis.readInt());
                System.out.println("Double"+dis.readDouble());
                System.out.println("Boolean"+dis.readBoolean());
                System.out.println("String"+dis.readUTF());
        }catch (IOException e){
            e.printStackTrace();
        }
    }
}

老师它报错了：'java.io.FilterOutputStream' 中的 'FilterOutputStream(java.io.OutputStream)' 无法应用于 '(java.lang.String)'

百度了，不会改

那是不是可以直接用shared_task代替掉celery_app.task了，还是说要先出现过celery_app.task后才能用shared_task

老师，我这获取不了结果，一直在转不知什么原因

老师，为什么我撤销提交的时候，就提示这个呀

score = (())
grade = score<:
    grade = score<:
    grade = score<:
    grade = score<=:
    grade = (.format(score,grade))

score = (())
grade = score<:
    grade = score<:
    grade = score<:
    grade = score<=:
    grade = (.format(score,grade))