(self, context, device_p)
You should not instanciate this class directly.
        Call LibUSBContext methods to receive instances of this class.
You should not instanciate this class directly.
        Call LibUSBContext methods to receive instances of this class.
You should not instanciate this class directly . Call LibUSBContext methods to receive instances of this class .
def __init__(self, context, device_p):
        """
        You should not instanciate this class directly.
        Call LibUSBContext methods to receive instances of this class.
        """
        # Important: device_p refcount must be incremented before being given
        # to this constructor. This class will decrement refcount upon
        # destruction.
        self.__context = context
        self.device_p = device_p
        # Fetch device descriptor
        device_descriptor = libusb1.libusb_device_descriptor()
        result = libusb1.libusb_get_device_descriptor(device_p,
            byref(device_descriptor))
        if result:
            raise libusb1.USBError(result)
        self.device_descriptor = device_descriptor
        # Fetch all configuration descriptors
        self.__configuration_descriptor_list = []
        append = self.__configuration_descriptor_list.append
        for configuration_id in xrange(device_descriptor.bNumConfigurations):
            config = libusb1.libusb_config_descriptor_p()
            result = libusb1.libusb_get_config_descriptor(device_p,
                configuration_id, byref(config))
            if result == libusb1.LIBUSB_ERROR_NOT_FOUND:
                # Some devices (ex windows' root hubs) tell they have one
                # configuration, but they have no configuration descriptor.
                continue
            if result:
                raise libusb1.USBError(result)
            append(config.contents)
def __init__ ( self , context , device_p ) : # Important: device_p refcount must be incremented before being given # to this constructor. This class will decrement refcount upon # destruction. self . __context = context self . device_p = device_p # Fetch device descriptor device_descriptor = libusb1 . libusb_device_descriptor ( ) result = libusb1 . libusb_get_device_descriptor ( device_p , byref ( device_descriptor ) ) if result : raise libusb1 . USBError ( result ) self . device_descriptor = device_descriptor # Fetch all configuration descriptors self . __configuration_descriptor_list = [ ] append = self . __configuration_descriptor_list . append for configuration_id in xrange ( device_descriptor . bNumConfigurations ) : config = libusb1 . libusb_config_descriptor_p ( ) result = libusb1 . libusb_get_config_descriptor ( device_p , configuration_id , byref ( config ) ) if result == libusb1 . LIBUSB_ERROR_NOT_FOUND : # Some devices (ex windows' root hubs) tell they have one # configuration, but they have no configuration descriptor. continue if result : raise libusb1 . USBError ( result ) append ( config . contents )