On 2/5/2013 10:23 AM, Duncan Booth wrote:
Bas <wegw...@gmail.com> wrote:
A) Implement the main program in C. In a loop, get a chunk of data
using direct call of C functions, convert data to python variables and
call an embedded python interpreter that runs one iteration of the
user's algorithm. When the script finishes, you read some variables
from the interpreter and then call some other C-function to write the
results.
B) Implement the main loop in python. At the beginning of the loop,
you call an embedded C function to get new data (using ctypes?), make
the result readable from python (memoryview?), do the user's
calculation and finally call another C function to write the result.
Are there any advantages for using one method over the other? Note
that I have more experience with python than with C.
Option B sounds like it makes your life simpler. Just turn the external
code into a library, use ctypes to call the library and you're done. That
also means reading command line arguments and/or config files can be done
in Python and keep the C code simpler.
This is exactly how I would start. If this is not fast enough for
production, Cython may help.
--
Terry Jan Reedy
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