def delete(self):
        self.db.delete_ticket(self.ticket_id)

    # Silence DeprecationWarning
The Numpy documentation lies; `numpy.ndarray.copy` is not equivalent to
dataset/ETHPy150Open getlogbook/logbook/logbook/ticketing.py/Ticket.delete--crossover with--dataset/ETHPy150Open spacetelescope/PyFITS/pyfits/fitsrec.py/FITS_rec.copy