Comtypes Has No Attribute '_application'

I'm experiencing a weird bug in a file conversion script I wrote in python. I'm using the comtypes library to convert different types of files into pdfs and for some reason, I get

Solution 1:

Instead of using comtypes.client Use pywin32

import win32com.client
#Replace excel=comtype.client.blablabla to
excel=win32com.client.DispatchEx("Excel.Application")

Keep remaining things as it is.

Ref. https://github.com/shardulind/pdfconv_python/blob/master/convertor.py