PET code is for converting PDF to CSV file. It is very helpful, when you try to extract data table from pdf file to CSV.

ZoomAttendancecheck code is for checking attendance of your zoom class. To successfully use this code to take attendance, You need to ask students share their zoom login email. You need to have roster saved as CSV format with the date as the file name. The roster should also include student zoom login email. Students have to use the same email during the semester to login zoom class.