widgets.Button for handling download

Hi, I would like to create a download button from widgets.Button, is it possible to do that? I know that the download can be achieved using link tag, i.e.

<a href="link/to/file" download>test_download</a>

Using button, I am not sure what to put to handle the download of the temporary file I created.

...
def on_button_download_clicked(b):
    # TODO: Handle download 

    # Disable button after downloading
    btn_download.disabled = True

btn_download.on_click(on_button_download_clicked)
...

Cheers

[nick-brady]

I found this thread trying to do exactly what @marketneutral said. I had the same thought that it must be a very easy/standard thing. I had issues when trying to use even an anchor within the notebook. It was getting Forbidden errors. I found something called FileLink.

Quick example:

from IPython.display import display, FileLink

local_file = FileLink('./demo.xlsx', result_html_prefix="Click here to download: ")
display(local_file)

I did some more searching and found this StackOverflow post. I added my answer (based on comments) if anyone else needs.

[marketneutral]

Yes, I think you are right – it’s a duplicate. #2445 is closed but I admit that I don’t readily follow that accepted answer. I can’t seem to find anything anywhere that gives an example of basic and core button functionality:

1. How do I have an ipywidgets button that when clicked, follows a link to another webpage?
2. How do you have an ipywidgets button send a file to the browser?