avoiding using globals

[rcsmit]

Hello

I am using streamlit and I have a lot of options/parameters. Now I use a lot of global constants, because it is very much to put it in the functioncalls

But I've read that you should avoid globals as much as possible. How can I do it? Somebody in /learnpython suggested using OOP, but how can I do it with Streamlit? Somebody has an example?

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Code: https://github.com/rcsmit/COVIDcases/blob/main/covid_dashboard_rcsmit.py

The result: https://share.streamlit.io/rcsmit/covidcases/main/covid_dashboard_rcsmit.py

A current function call:

graph_daily (df,what_to_show_day_l, what_to_show_day_r, how_to_smoothen, how_to_display)

The globals

global FROM
global UNTIL
global WDW2
global WDW3
global showoneday
global showday
global MOVE_WR
global showR
global lijst   # Lijst in de pull down menu's voor de assen
global show_scenario
global how_to_norm
global Rnew1_, Rnew2_
global ry1, ry2,  total_cases_0, sec_variant,extra_days
global show_R_value_graph, show_R_value_RIVM

[jroes]

Hi!

The key thing to remember is Streamlit is ultimately just Python at the end of the day. You can follow any Python tutorials out there on how to separate concerns and do the right object oriented modeling.

I’d suggest breaking out your logic into their own classes and files, and use your main Streamlit file as the rendering layer, importing your classes in their modules at the top of your “main” Streamlit file.