Testing select-like with pipes on windows

wintest.py

import time
import os
import ctypes
import ctypes.wintypes

PeekNamedPipe = ctypes.windll.kernel32.PeekNamedPipe
PeekNamedPipe.restype = ctypes.wintypes.BOOL

def try_peek(pipe, desc=''):
    lpTotalBytesAvail = ctypes.wintypes.DWORD(0)
    if isinstance(pipe, int):
        pipe = ctypes.wintypes.HANDLE(pipe)
    status = PeekNamedPipe(
        pipe,
        None,
        ctypes.wintypes.DWORD(0),
        None,
        ctypes.byref(lpTotalBytesAvail),
        None,
    )
    print(status, ctypes.GetLastError(), lpTotalBytesAvail)

pin = ctypes.wintypes.HANDLE(0)
pout = ctypes.wintypes.HANDLE(0)
ctypes.windll.kernel32.CreatePipe(ctypes.byref(pout), ctypes.byref(pin), None, 4096)
print(pin, pout)
try_peek(pout, 'CreatePipe:Open-Empty')

pin, pout = os.pipe()
print(pin, pout)
try_peek(pout, 'os.pipe:Open-Empty')

# p.side_in.write(b'Hello')
# try_peek(p, 'Open-HasData')

# print(repr(p.side_out.read(4000)))
# try_peek(p, 'Open-Empty')