(self, ptr, callback)
def callback(base, data, offset):
def callback(base, data, offset):
def callback ( base data offset ) :
def read_range_async(self, ptr, callback):
        """
        def callback(base, data, offset):
        """
        self.io.read_range_async(ptr, callback)
def read_range_async ( self , ptr , callback ) : self . io . read_range_async ( ptr , callback )