Python 尝试使用线程时出现包问题

Question

我目前正在尝试运行此代码：

import threading
import time


semafor = threading.BoundedSemaphore(value=5)

def access():
    print("{} wants to have permission".format(thread_number))
    semafor.acquire()
    print("{} got permission.".format(thread_number))
    time.sleep(5)
    print("{} lost permission.".format(thread_number))
    semafor.release()


for thread_number in range(1,11):
    t = threading.Thread(target=access, args=(thread_number,))
    t.start()
    time.sleep(1)

我收到了这个错误：

>Traceback (most recent call last):
  File "C:\x\x\AppData\Local\Programs\Python\Python310\lib\threading.py", line 1009, in _bootstrap_inner
    self.run()
  File "C:\x\x\AppData\Local\Programs\Python\Python310\lib\threading.py", line 946, in run
    self._target(*self._args, **self._kwargs)
TypeError: access() takes 0 positional arguments but 1 was given

我的库似乎有问题，我从未编辑或打开过任何库，我该如何解决？

Answer 1

根据此 https://docs.python.org/3/library/threading.html#threading.Thread.run ，目标可调用对象由 Thread.run 调用并传递您在 arg 和 kwarg 参数中提供的参数。因此，当您提供 args=(thread_number,) 时，您应该像这样定义访问函数

def access(thread_number):

Python 尝试使用线程时出现包问题

Python package problem while trying to use threading

python

multithreading

package