How to run two python scripts one after another in third python script

Question

I am trying to run two python scripts in the third python script. The two python scripts got executed simultaneously without waiting for the execution of one script after the other.

I tried time.sleep(100) but it's not working.

        a1 = "a.py"
        b1 = "b.py"
        python_path = '/opt/dev_ai/bin/python'
        execution = subprocess.Popen([python_path,ml_path+a1,str(rule)])
        time.sleep(100)
        execution=subprocess.Popen([python_path,ml_path+scor+b1,str(rule)])

b1 started running before the completion of a1.

You need call [`_ = execution.communicate()`](https://docs.python.org/3/library/subprocess.html#subprocess.Popen.communicate) to wait for the process to finish. — Maurice Meyer, Feb 04 '22 at 12:32

score 1 · Answer 1 · answered Feb 04 '22 at 12:34

1

If you want to run several python files in just one python file you can first; Keep them in a same file or folder. Next you can type import 1stfile then import 2ndfile and you can add as many as you want. This only imports python files though

answered Feb 04 '22 at 12:34

ScamperedC

45
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Your answer could be improved with additional supporting information. Please [edit] to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – Community Feb 04 '22 at 14:29

score 0 · Accepted Answer · answered Feb 04 '22 at 12:27

0

Check the return code of the subprocess1 and if it is okay, execute the second subprocess.

How to get exit code when using Python subprocess communicate method?

answered Feb 04 '22 at 12:27

Devang Sanghani

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score 0 · Answer 3 · edited Feb 04 '22 at 12:52

0

That's subprocess starts asynchronous processes, to make this synchronous check out this thread

edited Feb 04 '22 at 12:52

Emilio

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answered Feb 04 '22 at 12:30

RaiBnod

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How to run two python scripts one after another in third python script

3 Answers3