Use Argument Clinic for more functions and methods

Many functions and methods implemented in C still parse their arguments with PyArg_ParseTuple() or PyArg_UnpackTuple().
They have no signature for introspection and use the slow METH_VARARGS calling convention.

There are 131 such PyMethodDef entries outside the test modules: _curses 25, _ctypes 16, _interpchannels 13 (GH-139141), time 11, _io 9, _tkinter 8, _thread 6, _csv 5, socket 3, sys 3, and 32 more in 27 files.

A few of them cannot be converted: the behaviour of socket.sendto(), socket.setsockopt() and socket.ioctl() depends on the number or the value of the arguments, and Argument Clinic rejects module-level __getattr__() as a special method.

I am going to submit a separate PR per module.

Linked PRs

• gh-155511
• gh-155512
• gh-155513
• gh-155514

首先检查所列模块中剩余的 PyMethodDef 条目，以及 CPython 中已经使用的 Argument Clinic 约定。排除 socket.sendto()、socket.setsockopt()、socket.ioctl() 和模块级别的 getattr()；当符合条件的函数和方法使用 Argument Clinic，而不是所述的解析和调用约定时，即表示完成。