wingetports.py 文件源码

def portiter():
    key = winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE, b'HARDWARE\\DEVICEMAP\\SERIALCOMM') # open the registry
    i = 0
    while True: # loop until we run out of devices
        try:
            name = bytes(winreg.EnumValue(key, i)[1]) # get the device name
            # EnumValue gets item number i, returning a tuple containing the name in position 1
        except OSError: # that's all the devices
            break
        yield name, port_prefix + name
        i += 1