Create uniform PMT vector from python

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1

Hi all,

Is there a way to create a uniform PMT vector from python?

I can use, for example, ‘pmt.make_c32vector(length, value)’ to create
a vector where each element is ‘value’ but I don’t see a way to modify
these values from python.

If there isn’t, are there any objections to overloading these
functions to take std::vectors as input so that we can pass in lists
from python?

Cheers,
Ben

2

from python?

Cheers,
Ben

Hi,

I remember, I wasn’t sure about the supposed way of doing that either
for
a u8vector. Finally I used the set method to set the individual elements
like this:

elements as list

values = (0xA1, …)

create pmt vector with one default value for all elements

pmtvector = pmt.pmt_make_u8vector(len(values), 0x00)

set the individual elements

for i in xrange(len(values)) :
pmt.pmt_u8vector_set(pmtvector, i, values[i])

3

Great, thanks. I’m only using it for QA code so setting the elements
one by one like you suggest will work fine.

4

Yes, that’s perfect. Thanks.

On Thu, Apr 11, 2013 at 10:58 AM, Martin B. (CEL)

5

Hi Ben,

doesn’t pmt.to_pmt(LIST) do what you want?

Cheers,
MB

On Thu, Apr 11, 2013 at 10:03:21AM -0700, Ben R. wrote:

these values from python.
I remember, I wasn’t sure about the supposed way of doing that either for
for i in xrange(len(values)) :

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–
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Communications Engineering Lab (CEL)

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Research Associate

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6

Just for the sake of anybody else who finds this mail thread when
searching.

Check out the file ‘pmt_to_python.py’ which resides at
‘gnuradio-runtime/python/pmt/pmt_to_python.py’ (the location pre-3.7
is different).

The two useful functions are:
pmt.to_pmt - Converts a python object to a PMT object.
pmt.python_to_pmt.python_to_pmt - Converts a PMT object to a python
object.

It can handle booleans, strings, integers, longs, floats, complex
numbers, dictionaries, lists and tuples.

I added a mention of these functions to the wiki.

7

On Thu, Apr 11, 2013 at 2:56 PM, Ben R. [email protected] wrote:

It can handle booleans, strings, integers, longs, floats, complex
numbers, dictionaries, lists and tuples.

I added a mention of these functions to the wiki.

Just FYI, the other way to do this is to use the “pmt.init_xxxvector”
call. It takes the number of items and list of items (as a Python
list) of the right data type as its arguments.

Tom