How to add a download excel/csv function to a button?

[randyzwitch]

@Chad_Mitchell created something similar to this idea:

A download button with custom CSS

[Update 2020-07-18] Revised the function to display a download button instead of a link after clicking a button, saving a UI step. The associated gist has been updated with the new version. Also, updated post title to reflect changes (hope that’s ok mods). Hi, if it helps others, I created a first pass general file downloader for my personal Streamlit projects. I’ve also built an examples app to test it out with your files and to provide code snippets you can copy & paste. See the following Gi…