If I have the follow 2 sets of code, how do I glue them together?
void
c_function(void *ptr) {
int i;
for (i = 0; i < 10; i++) {
printf("%p", ptr[i]);
}
return;
}
def python_routine(y):
x = []
for e in y:
x.append(e)
How can I call the c_function with a contiguous list of elements in x? I tried to cast x to a c_void_p, but that didn't work.
I also tried to use something like
x = c_void_p * 10
for e in y:
x[i] = e
but this gets a syntax error.
The C code clearly wants the address of an array. How do I get this to happen?
The following code works on arbitrary lists:
import ctypes
pyarr = [1, 2, 3, 4]
arr = (ctypes.c_int * len(pyarr))(*pyarr)
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