I have an array in the form [ uchar, float, float, float, uchar, float, float, float, .... ] I know I can pack it like this: my_array.pack( "CFFFCFFFCFFF...." ) but then I have to create a string with as many elements as the array I am packing, which can be quite large. Is there a way to abbreviate this string (eg, somethign like my_array.pack( '(CFFF)*' ) ? Thanks