python Thread()中args和kwargs的区别

在Python中，Thread()是创建多线程的类。args和kwargs都是Thread()方法中的可选参数，用于传递给线程函数的参数。

- args：是一个元组，包含传递给线程函数的位置参数。
- kwargs：是一个字典，包含传递给线程函数的关键字参数。

举个例子，假设我们有一个函数需要两个参数：

def my_func(arg1, arg2):
    print(arg1 + arg2)

我们可以使用args和kwargs将这些参数传递给Thread()方法：

import threading

my_thread = threading.Thread(target=my_func, args=(1, 2))
my_thread.start()

my_other_thread = threading.Thread(target=my_func, kwargs={"arg1": 3, "arg2": 4})
my_other_thread.start()

在第一个例子中，我们将arg1和arg2作为位置参数传递给线程函数。在第二个例子中，我们将arg1和arg2作为关键字参数传递给线程函数。

总之，args和kwargs都是用于将参数传递给线程函数的方法，args用于传递位置参数，kwargs用于传递关键字参数。

相关问题

Exception in thread Thread-1 (worker): Traceback (most recent call last): File "D:\python\lib\threading.py", line 1016, in _bootstrap_inner self.run() File "D:\python\lib\threading.py", line 953, in run self._target(*self._args, **self._kwargs) File "c:\Users\12732\Desktop\qp\test.py", line 31, in worker Worker Thread-3 (worker) modified num: 7 Exception in thread Thread-2 (worker)fcntl.flock(f, fcntl.LOCK_EX) AttributeError: : Traceback (most recent call last): module 'fcntl' has no attribute 'LOCK_EX' File "D:\python\lib\threading.py", line 1016, in _bootstrap_inner self.run() File "D:\python\lib\threading.py", line 953, in run Exception in thread Thread-3 (worker): Traceback (most recent call last): File "D:\python\lib\threading.py", line 1016, in _bootstrap_inner Worker Thread-4 (worker) modified num: 6 self._target(*self._args, **self._kwargs) self.run() File "c:\Users\12732\Desktop\qp\test.py", line 31, in worker Exception in thread Thread-4 (worker) File "D:\python\lib\threading.py", line 953, in run : Traceback (most recent call last): File "D:\python\lib\threading.py", line 1016, in _bootstrap_inner Worker Thread-5 (worker) modified num: 5 fcntl.flock(f, fcntl.LOCK_EX) self._target(*self._args, **self._kwargs)AttributeError: module 'fcntl' has no attribute 'LOCK_EX' File "c:\Users\12732\Desktop\qp\test.py", line 31, in worker self.run() File "D:\python\lib\threading.py", line 953, in run fcntl.flock(f, fcntl.LOCK_EX) self._target(*self._args, **self._kwargs)AttributeError: module 'fcntl' has no attribute 'LOCK_EX' File "c:\Users\12732\Desktop\qp\test.py", line 31, in worker Exception in thread Thread-5 (worker): Traceback (most recent call last): File "D:\python\lib\threading.py", line 1016, in _bootstrap_inner fcntl.flock(f, fcntl.LOCK_EX) self.run() AttributeError: File "D:\python\lib\threading.py", line 953, in run module 'fcntl' has no attribute 'LOCK_EX' self._target(*self._args, **self._kwargs) File "c:\Users\12732\Desktop\qp\test.py", line 31, in worker fcntl.flock(f, fcntl.LOCK_EX) AttributeError: module 'fcntl' has no attribute 'LOCK_EX'

这个报错是因为在您的代码中使用了`fcntl`模块来进行文件锁定，但是在您的环境中该模块没有`LOCK_EX`属性。这可能是因为您的操作系统不支持`fcntl`模块或者您的Python版本不兼容`fcntl`模块。

您可以尝试使用其他方式来实现文件锁定，例如使用`msvcrt`模块（仅适用于Windows系统）或者使用`fcntl`模块的其他属性（例如`LOCK_SH`、`LOCK_NB`等）。

另外，请确保您的Python版本和操作系统环境与代码中使用的模块和属性兼容。

如果您需要更具体的帮助，请提供您使用的Python版本以及操作系统信息。

Traceback (most recent call last): File "/usr/lib/python3.10/threading.py", line 1016, in _bootstrap_inner self.run() File "/usr/lib/python3.10/threading.py", line 953, in run self._target(*self._args, **self._kwargs) File "/usr/lib/python3/dist-packages/apt_offline_core/AptOfflineLib.py", line 691, in run if threading.currentThread().guiTerminateSignal: File "/usr/lib/python3.10/threading.py", line 1449, in currentThread warnings.warn('currentThread() is deprecated, use current_thread() instead', DeprecationWarning: currentThread() is deprecated, use current_thread() instead Downloaded data to /var/cache/apt/archives/xubuntu-desktop.zip

这段代码可能是在执行一个名为 "AptOfflineLib.py" 的 Python 脚本。从这个错误信息中可以看出，它使用了一个已经被弃用的方法 "currentThread()"，建议使用 "current_thread()" 方法替代。同时，它似乎在下载一个名为 "xubuntu-desktop.zip" 的文件到 "/var/cache/apt/archives/" 目录。