This is the easiest way I know so far on how to open PDF file in default PDF application. We will do it by importing webbrowser.
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On this page of the site you can watch the video online PYTHON How to open PDF file with a duration of hours minute second in good quality, which was uploaded by the user SIMPLECODE 02 October 2015, share the link with friends and acquaintances, this video has already been watched 8,162 times on youtube and it was liked by 17 viewers. Enjoy your viewing!