[benob]

Here is what I came up with for calling a c function after poking around a little bit:

  #include "pocketpy.h" 
    
  // builtin function that can be called
  PyVar test(VM* vm, const pkpy::Args& args) {
    printf("called!\n");
    return vm->PyStr("hi there");
  }   

  int main(){
    // Create a virtual machine 
    VM* vm = pkpy_new_vm(true);
    vm->bind_builtin_func<1>("test", test);
    
    // Hello world!
    pkpy_vm_exec(vm, "print(test('Hello world!'))");
    
    // Free the resources
    pkpy_delete(vm);
    return 0;
  }