#NEWLINE# def claim_interface( self , dev_handle , intf ) : #NEWLINE# #INDENT# 'Claim the given interface.\n\n        Interface claiming is not related to USB spec itself, but it is\n        generally an necessary call of the USB libraries. It requests exclusive\n        access to the interface on the system. This method must be called\n        before using one of the transfer methods.\n\n        dev_handle is the value returned by the open_device() method and\n        intf is the bInterfaceNumber field of the desired interface.\n        ' #NEWLINE# _not_implemented ( self . claim_interface )