(self, sheet)
WARNING: It is impossible to iterate newly added sheets before the
        survey has been saved!
WARNING: It is impossible to iterate newly added sheets before the
        survey has been saved!
WARNING : It is impossible to iterate newly added sheets before the survey has been saved!
def add_sheet(self, sheet):
        """"
        WARNING: It is impossible to iterate newly added sheets before the
        survey has been saved!
        """
        sheet.survey = self
        sheet._rowid = -1

        self.goto_sheet(sheet)
def add_sheet ( self , sheet ) : sheet . survey = self sheet . _rowid = - 1 self . goto_sheet ( sheet )