How to convert a .pptx to .pdf using Python

Question

I have been looking to convert a .pptx file to a .pdf file through a Python script for several hours but nothing seems to be working.

What I have tried:

Answer 1

I believe the answer has to be updated because because comtypes doesn't work anymore.

So this is the code which works (updated version of the accepted answer) :

import win32com.client

def PPTtoPDF(inputFileName, outputFileName, formatType = 32):
    powerpoint = win32com.client.DispatchEx("Powerpoint.Application")
    powerpoint.Visible = 1

    if outputFileName[-3:] != 'pdf':
        outputFileName = outputFileName + ".pdf"
    deck = powerpoint.Presentations.Open(inputFileName)
    deck.SaveAs(outputFileName, formatType) # formatType = 32 for ppt to pdf
    deck.Close()
    powerpoint.Quit()