using builtin array

[Diez B. Roggisch]

shama.bell at gmail.com wrote:
> Is it possible to join/append 2 arrays defined with different
> typecodes?
> 
> What typecode should i use to generate the following output.
> 
> data1 = array('h', '\0', 6)
> data2 = array('L', '\0', 25)
> 
> for i in range( 6):
>     data1[0] = 0xFF
>     data2[1] = 0x00
>     data1[2] = 0x00
>     data1[3] = 0x00
>     data1[4] = 0x00
>     data1[5] = 0x00
> 
> for i in range( 2):
>     data2[0] = 0xF0F0F0F0
>     data2[1] = 0xFFFFFFFF
> 
> Output should be...
> (0xFF 0x00 0x00 0x00 0x00 0x00 0xF0F0F0F0 0xFFFFFFFF)


An arry has one typecode that applies to all its elements - so what you 
want can't be done.

But you can use two lists and the module struct to create a string that 
resembles the memory layout you want.


data1 = [0] * 6
data2 = [0L] * 25

struct.pack("b" * len(data1) + "l" * len(25), *(data1 + data2))

But I think you should give us more information on what you actually 
want to accomplish, as I've got the impression that you try to force 
things in awy that is not optimal.

Diez