python 3 SWIG on windows 10

For python 3:

/* File : example.c */
 
 #include  <time.h>
 double My_variable = 3.0;
 
 int fact(int n) {
     if (n <= 1) return 1;
     else return n*fact(n-1);
 }
 
 int my_mod(int x, int y) {
     return (x%y);
 }
  
 char *get_time()
 {
     time_t ltime;
     time(&ltime);
     return ctime(&ltime);
 }

Interface file

 /* example.i */
 %module example
 %{
 /* Put header files here or function declarations like below */
 extern double My_variable;
 extern int fact(int n);
 extern int my_mod(int x, int y);
 extern char *get_time();
 %}
 
 extern double My_variable;
 extern int fact(int n);
 extern int my_mod(int x, int y);
 extern char *get_time();
 

Building a Python module

D:\temp\Documents\Python_call_C\example>swig -python -py3 example.i

D:\temp\Documents\Python_call_C\example>gcc -c example.c example_wrap.c -I"D:\Program Files (x86)\Python36-32\include"

D:\temp\Documents\Python_call_C\example>gcc -shared example.o example_wrap.o "D:\Program Files (x86)\Python36-32\python36.dll" "C:\Windows\System32\msvcr120.dll" -o _example.pyd





We can now use the Python module:





import example




print(example.fact(5))

print(example.my_mod(7,3))

print(example.get_time())




>>>>>>>>>>>>>>>>>>>>>>

Example Result:

120
1
Sun Aug 26 21:26:01 2018