#!/usr/bin/env python3
import subprocess
s='''#include <cstdio>
int main(){puts("hi");}
'''
open('/tmp/a.cpp','w').write(s)
r=subprocess.run(['clang++','-O2','/tmp/a.cpp','-o','/tmp/a'],capture_output=True,text=True)
print('C',r.returncode,r.stderr)
q=subprocess.run(['/tmp/a'],capture_output=True,text=True)
print('X',q.returncode,repr(q.stdout),repr(q.stderr))