[alsa-devel] [PATCH 13/13] libhinawa: add sample scripts

[Alexander E. Patrakov]

25.01.2015 16:34, Takashi Sakamoto wrote:
> +from array import array
> +
> +# helper function
> +def get_array():
> +    # The width with 'L' parameter is depending on environment.
> +    arr = array('L')
> +    if arr.itemsize is not 4:
> +        arr = array('I')
> +    return arr


If you insist on using arrays, then please add an assertion that you 
have actually got an array with itemsize 4 at the end. But, if I were 
you, I'd go with the "ctypes" module instead, if it works. Here is how 
you get a fixed-size (in the example, 10 elements) array with signed 
4-byte elements:

from ctypes import *
TenInts = c_int32 * 10
ii = TenInts()

The result supports buffer protocol.

-- 
Alexander E. Patrakov