Import streamlit file inside app works upon first load only

Using Streamlit
1

I am writing an App which uses url queries to fetch parameters and, depending on the value of a parameter, imports a certain Python file for execution. This works well when first loaded; however, when any kind of action is taken inside the imported python file, the page goes blank.

Does anyone know what I am doing wrong?

import streamlit as st

authorised_apps = {'et': 'file-1', 'bc': 'file-2'}

query = st.experimental_get_query_params()
# st.write(query)

# check that app exists
if "app" in query:
    # check that app is authorised
    if query['app'][0] in authorised_apps:
        # import the requested app
        __import__(authorised_apps[str(query['app'][0])])
        
    else:
        st.error("The requested app is not authorised!")
    
else:
    st.error("The query is not correct, it needs to contain the parameter 'app'.")
2

The idea here is that you can control the file that is executed using URL queries and therefore make the URL book-markable.

3

I figures it out! Of course import is not reloading. Instead, I used:

exec(open(file + '.py', encoding="utf-8").read())

This seems to work fine now!

4

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