numeric module

[David M. Cooke]

shama.bell at gmail.com writes:

> Hello,
> What's the problem with this code? I get the following error message:
>
>  File "test.py", line 26, in test
>     print tbl[wi][bi]
> IndexError: index must be either an int or a sequence
>
> ---code snippet----
>
> from Numeric import *
> tbl = zeros((32, 16))
>
> def test():
>
>     val = testme()
>     wi = val >> 4
>     bi = val & 0xFL
[above changed to use val instead of crc, as you mentioned in another post]
>     print wi
>     print bi
>     print tbl[wi][bi]

tbl[wi][bi] would be indexing the bi'th element of whatever tbl[wi]
returns. For Numeric arrays, you need

tbl[wi,bi]

Now, you'll have another problem as Terry Reedy mentioned: the indices
(in Numeric) need to be Python ints, not longs. You could rewrite your
test() function as

def test():
    val = testme()
    wi = int(val >> 4)
    bi = int(val & 0xF)
    print wi
    print bi
    print tbl[wi,bi]

and that'll work.

-- 
|>|\/|<
/--------------------------------------------------------------------------\
|David M. Cooke
|cookedm(at)physics(dot)mcmaster(dot)ca