Accepts Churchbuilder attendance spreadsheets and creates a new spreadsheet with the attendance totals over the given period.

Usage:

Ensure that Churchbuilder generated .ods files are in the same directory as totalAttendance.py

Initiate the program and enter as many registers that you'd like to appear together in the final spreadsheet.

Note - group names will appear as column headers in the final spreadsheet

Type q to quit once you've entered all the .ods files

The new file - 'Total Attendance.xlsx' will appear in the working directory

Test the program with 'attendance example.ods'