# Python : Core Library : System
**Standard Library**
- [os](https://docs.python.org/3/library/os.html) — *process mgmt and other system calls*
- [shutil](https://docs.python.org/3/library/shutil.html) — *a single terminal-related function*
- [subprocess](https://docs.python.org/3/library/subprocess.html) — *TODO*
- [sys](https://docs.python.org/3/library/sys.html) — *args, paths, hooks, cmd flags, std files, prompts, info, exit*
## subprocess
```python
result = run([ args ])
Options:
capture_output = True
text = True
result.args
result.returncode
result.stdout
result.stderr
```