openpilot is an open source driver assistance system. openpilot performs the functions of Automated Lane Centering and Adaptive Cruise Control for over 200 supported car makes and models.
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import subprocess
from contextlib import contextmanager
from subprocess import Popen, PIPE, TimeoutExpired
def run_cmd(cmd: list[str], cwd=None, env=None) -> str:
return subprocess.check_output(cmd, encoding='utf8', cwd=cwd, env=env).strip()
def run_cmd_default(cmd: list[str], default: str = "", cwd=None, env=None) -> str:
try:
return run_cmd(cmd, cwd=cwd, env=env)
except subprocess.CalledProcessError:
return default
@contextmanager
def managed_proc(cmd: list[str], env: dict[str, str]):
proc = Popen(cmd, env=env, stdout=PIPE, stderr=PIPE)
try:
yield proc
finally:
if proc.poll() is None:
proc.terminate()
try:
proc.wait(timeout=5)
except TimeoutExpired:
proc.kill()