Having issues to deploy app

i have a py file and would like to publish it but it cant read packages like plaotly express how can i fix it. i read i have to create a file called requirements.txt but unsure how

and when i did it probably wrong i get this message

Hi @Salem_Gr ,

Welcome to the Streamlit community forum :partying_face: :balloon:

Try using pipreqs package to generate your requiremnts.txt file.

Hope this helps.

Best
Avra

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