How can we send argument to python project

[codaman]

i've create second char array

i'm using youtube-dl project

NSString* main_script2 = @" -g https://www.youtube.com/watch?v=B3eAMGXFw1o";
const char *c = [main_script2 cStringUsingEncoding:NSUTF8StringEncoding];

python_argv[1] = _Py_char2wchar(c, NULL);

output:

Unable to open main.py, abort.
Leaving

how can we send an argument to main.py