usb1.py 文件源码

def __init__(self):
        """
        Create a new USB context.
        """
        # Used to prevent an exit to cause a segfault if a concurrent thread
        # is still in libusb.
        self.__context_refcount = 0
        self.__context_cond = threading.Condition()
        self.__context_p = libusb1.libusb_context_p()
        self.__hotplug_callback_dict = {}
        self.__close_set = WeakSet()