(self, context, handle, device)
You should not instanciate this class directly.
        Call "open" method on an USBDevice instance to get an USBDeviceHandle
        instance.
You should not instanciate this class directly.
        Call "open" method on an USBDevice instance to get an USBDeviceHandle
        instance.
You should not instanciate this class directly . Call open method on an USBDevice instance to get an USBDeviceHandle instance .
def __init__(self, context, handle, device):
        """
        You should not instanciate this class directly.
        Call "open" method on an USBDevice instance to get an USBDeviceHandle
        instance.
        """
        self.__context = context
        # Weak reference to transfers about this device so we can clean up
        # before closing device.
        self.__transfer_set = WeakSet()
        # Strong references to inflight transfers so they do not get freed
        # even if user drops all strong references to them. If this instance
        # is garbage-collected, we close all transfers, so it's fine.
        self.__inflight = inflight = set()
        # XXX: For some reason, doing self.__inflight.{add|remove} inside
        # getTransfer causes extra intermediate python objects for each
        # allocated transfer. Storing them as properties solves this. Found
        # with objgraph.
        self.__inflight_add = inflight.add
        self.__inflight_remove = inflight.remove
        self.__handle = handle
        self.__device = device
def __init__ ( self , context , handle , device ) : self . __context = context # Weak reference to transfers about this device so we can clean up # before closing device. self . __transfer_set = WeakSet ( ) # Strong references to inflight transfers so they do not get freed # even if user drops all strong references to them. If this instance # is garbage-collected, we close all transfers, so it's fine. self . __inflight = inflight = set ( ) # XXX: For some reason, doing self.__inflight.{add|remove} inside # getTransfer causes extra intermediate python objects for each # allocated transfer. Storing them as properties solves this. Found # with objgraph. self . __inflight_add = inflight . add self . __inflight_remove = inflight . remove self . __handle = handle self . __device = device