why are you reading this example

#include<stdio.h>/* include_as = macro: define `PY_FOR(...)` and `PY_WHL(...)` *//* include_as = syntax_extension: same as macro, but also override `for(...)` and `while(...)` */#defineinclude_as syntax_extension#include"pythonelse.h"intmain(void) {for (inti=0;i<10;i++) {printf("i: %d\n",i);  }else {printf("stop. don't use this library. why. WHY.\n");  }for (inti=0;i<10;i++) {printf("i: %d\n",i);if (i==5)break;  }else {printf("pictured: dead code\n");  }return0;}