object of __main__module

在Python中，`__main__`是一个特殊的模块名，它表示当前执行的脚本或模块。当我们直接运行一个Python脚本时，该脚本的`__name__`属性会被设置为`__main__`。这样可以方便地判断一个模块是被导入还是直接运行。

下面是一个演示例子：

# 演示__main__模块
print(__name__)  # 输出：__main__

上述代码中，我们直接运行了一个Python脚本，并打印了`__name__`属性的值，结果为`__main__`。

相关问题

Can't pickle <class '__main__.net'>: it's not the same object as __main__.net

This error message occurs when you try to pickle an object that is not defined in the main module. In this case, it looks like you are trying to pickle an object of the class "net" that is defined in a different module or file.

To fix this, you can either define the "net" class in the main module or import it into the main module before pickling the object. Alternatively, you can use a different serialization method that does not rely on pickling.

(pyTbaoself) C:\Users\Admin>pip install --upgrade pip Traceback (most recent call last): File "d:\python\lib\runpy.py", line 193, in _run_module_as_main return _run_code(code, main_globals, None, File "d:\python\lib\runpy.py", line 86, in _run_code exec(code, run_globals) File "D:\python\Scripts\pip.exe\__main__.py", line 5, in <module> File "d:\python\lib\site-packages\pip\_internal\cli\main.py", line 10, in <module> from pip._internal.cli.autocompletion import autocomplete File "d:\python\lib\site-packages\pip\_internal\cli\autocompletion.py", line 10, in <module> from pip._internal.cli.main_parser import create_main_parser File "d:\python\lib\site-packages\pip\_internal\cli\main_parser.py", line 9, in <module> from pip._internal.build_env import get_runnable_pip File "d:\python\lib\site-packages\pip\_internal\build_env.py", line 19, in <module> from pip._internal.cli.spinners import open_spinner File "d:\python\lib\site-packages\pip\_internal\cli\spinners.py", line 9, in <module> from pip._internal.utils.logging import get_indentation File "d:\python\lib\site-packages\pip\_internal\utils\logging.py", line 29, in <module> from pip._internal.utils.misc import ensure_dir File "d:\python\lib\site-packages\pip\_internal\utils\misc.py", line 40, in <module> from pip._vendor.tenacity import retry, stop_after_delay, wait_fixed File "d:\python\lib\site-packages\pip\_vendor\tenacity\__init__.py", line 397, in <module> FutureGenericT = futures.Future[t.Any] TypeError: 'type' object is not subscriptable (pyTbaoself) C:\Users\Admin>

这个错误提示看起来是pip版本的问题。你可以尝试先升级一下pip再执行安装命令。你可以以下命令来升级pip：

pythonm pip install --upgrade pip

如果升pip后还是出现同样的错误，你可以考虑卸载pip并重新安装它。