从 python 文件运行 shell 命令

Question

I've seen a lot of answers for this one but im trying to run something pretty complicated. Trying to run something like the following command from my python file. Some parts are missing but the basic idea is:

python detect.py --source ~user/'image' --weights ~/user'ID' --img 640")

and at image and ID I've got inputs from the python file. I've tried with import.os and import.subprocess but had no luck as it seems Im messing up my file declarations probably.

Answer 1

If you use subprocess.run() you want to pass in the command as a list of strings. You can then use f-string formatting to put variables like with into your strings.

import subprocess

width = 640
argument2 = f"--img {width}"

result = subprocess.run(
    ["python", "detect.py", "argument1", argument2]
)
print(result)