How Can I Run a Streamlit App from within a Python Script?

Question

I'm just figuring out how to run the command streamlit run APP_NAME.py with a python script, which might look like:

import streamlit

streamlit.run("APP_NAME.py")

I can't securely depend on a call to os.system(...) or subprocess.

Answer 1

I guess this works, I investigated the genuine streamlit document in my python/conda bin, and it had these lines:

import re

import sys

from streamlit.cli import main

if __name__ == '__main__':

    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])

    sys.exit(main())

From here, you can see that running streamlit run APP_NAME.py on the order line is the equivalent (in python) as:

import sys

from streamlit import cli as stcli

if __name__ == '__main__':

    sys.argv = ["streamlit", "run", "APP_NAME.py"]

    sys.exit(stcli.main())

So I put that in another content and afterward run that content to run the first application from python, and it appeared to work. I don't know how cross-platform this answer is, however, as it actually depends fairly on command line args.

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