run-cmd
Run a command within python
Install it
pip install python-run-cmd
# pip install git+https://github.com/ffreemt/run-cmd
# poetry add git+https://github.com/ffreemt/run-cmd
# git clone https://github.com/ffreemt/run-cmd && cd run-cmdUse it
run_cmd
from python_run_cmd import run_cmd
ret = run_cmd("ls -l")
if ret.returncode:
print("Failed")
else:
print("OK")An exception will be raised when errors occur. This may come handy sometimes.
from python_run_cmd import run_cmd
try:
ret = run_cmd("lsss -l")
except Exception as exc:
print(exc)
# 'lsss' is not recognized as an internal
# or external command, operable program or batch file.Set raise_stderr=False to ignore errors
from python_run_cmd import run_cmd
ret = run_cmd("lsss -l", raise_stderr=False)
if ret.returncode:
print("Failed")
else:
print("OK")
run_cmd_async
Simultaneously run several commands:
import asyncio
import webbrowser
from python_run_cmd import run_cmd_async
async def browse_8000():
webbrowser.open("http://127.0.0.1:8000")
async def main():
return await asyncio.gather(
run_cmd_async("ping www.baidu.com"),
browse_8000(),
run_cmd_async("python -m http.server"),
)
asyncio.run(main())For Python up to 3.10, it can be simplified (it won't work with Python 3.11):
import asyncio
import webbrowser
from python_run_cmd import run_cmd_async
async def browse_8000():
webbrowser.open("http://127.0.0.1:8000")
asyncio.run(
asyncio.wait(
[
run_cmd_async("ping www.baidu.com"),
browse_8000(),
run_cmd_async("python -m http.server"),
]
)
)Note there is no auxiliary async main function.
run_cmd_stream
Some commands take a long time to complete. If we want to see live stream output (one line at a time), run_cmd_stream can be used.
from python_run_cmd import run_cmd_stream
run_cmd_stream("ping -n 100 baidu.com")We won't have to wait until all 100 pings to complete to see the output.
