How can I invoke streamlit from within python code?

Deployment
1

Hello Folks,

What is the best means to invoke streamlit from within python code ?
I dont want to go via the CLI route of streamlit run <script-name.py>

This link has some reference, but again to invoke as mentioned in link, python click context is needed.

Thankyou
Jacob

2

Looks like this is a way:

import os
import streamlit.bootstrap
from streamlit import config as _config

dirname = os.path.dirname(__file__)
filename = os.path.join(dirname, 'app.py')

_config.set_option("server.headless", True)
args = []

#streamlit.cli.main_run(filename, args)
streamlit.bootstrap.run(filename,'',args)
3 Likes
3

Thanks for the helpful tips! That’s what I was trying to find.

By the way, when I ran your code, I saw the following error.

TypeError: run() missing 1 required positional argument: 'flag_options'

Instead, I had to write as following. This may be due to a different version of Streamlit. (I’m using Streamlit version 0.86.0.)

streamlit.bootstrap.run(filename, '', args, flag_options={})

In anyway, thanks again for the tips!

Regards,
Atsushi

4

Hi, i figured when i start streamlit with bootstrap, it will break forms. As long as I run the code from command line, everything works. When I invoke streamlit from within python, forms are broken.

I opened an issue here.

Feel free to add if you have any thoughts about it.

5

For those who are interested in this feature,

streamlit.bootstrap has been moved to streamlit.web.boostrap.

6

You can also do

import sys
from streamlit.web import cli as stcli

if __name__ == '__main__':
    sys.argv = ["streamlit", "run", "APP_NAME.py"]
    sys.exit(stcli.main())

Source:

7

Official supported & recommended way is via cli.

streamlit run your_app.py

But still, if you prefer to render the app from within python, in st 1.30 is

from streamlit import config as _config
from streamlit.web.bootstrap import run
_config.set_option("server.headless", True)
run('your_app.py', args=[], flag_options=[], is_hello=False)

But this could change from one release to another (as it’s not officially supported)