batch_ppt_to_pdf.py

import comtypes.client
import os

def init_powerpoint():
    powerpoint = comtypes.client.CreateObject("Powerpoint.Application")
    powerpoint.Visible = 1
    return powerpoint

def ppt_to_pdf(powerpoint, inputFileName, outputFileName, formatType = 32):
    deck = powerpoint.Presentations.Open(inputFileName)
    deck.SaveAs(outputFileName, formatType) # formatType = 32 for ppt to pdf
    deck.Close()

def convert_files_in_folder(powerpoint, folder):
    pptFolder = 'ppt'
    pptPath = os.path.join(folder, pptFolder)
    pdfFolder = 'pdf'
    pdfPath = os.path.join(folder, pdfFolder)
    files = os.listdir(pptPath)
    pptfiles = [f for f in files if f.endswith((".ppt", ".pptx"))]
    for pptfile in pptfiles:
        pptFullPath = os.path.join(pptPath, pptfile)
        name,_ = os.path.splitext(pptfile)
        pdfFile = name + '.pdf'
        pdfFullPath = os.path.join(pdfPath, pdfFile)
        ppt_to_pdf(powerpoint, pptFullPath, pdfFullPath)

if __name__ == "__main__":
    powerpoint = init_powerpoint()
    cwd = os.getcwd()
    convert_files_in_folder(powerpoint, cwd)
    powerpoint.Quit()