How to actively watch for a selected file from a FileInput widget in the same jupyter cell?

Panel
1

I have the following code, which works as intended except for the fact that if I paste all the code in the same Jupyter cell it won’t work:

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How can I adjust the code such that I can immediately access df in the same Jupyter cell?

Code as text:

import panel as pn    
import pandas as pd
from io import BytesIO
pn.extension()

uploadFile = pn.widgets.FileInput(accept=".csv")

def get_data_from_file(file):
    if file is not None:
        df = pd.read_csv(BytesIO(file))
        return df
  
get_df = pn.bind(get_data_from_file, uploadFile)

df = get_df()
2

Or is the current best practices to have a “confirm” button after selecting a file? How would I add a button to do this?