How to run multiple threads properly

[cyberion1985]

import threading

def csv2xlsx(file_name):
    # procces the csv
    # save the xlsx

_ = [threading.Thread(target=csv2xlsx, args=(file_name,)).start() for file_name in files_list]

Something like that? I've never used threading module but I tried to put together something looking at the docs a minute ago. Hope this will work.

Thanks for your reply. My functions run like this

def PR01()
    # process file

PR01()
PR02()
PR03()
PR04()

The reason why I am using this approach is because each function is somewhat unique and on each function I receive feedback on how long it took to run. The largest file takes 11 minutes to generate for example. To clarify ; in each function :

1.) file might be be renamed
2.) file might be converted to XLSX
3.) file might be receive a header
4.) file might be autofit