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##############################################################################
#
# Example of how to subclass the Workbook and Worksheet objects. We also
# override the default worksheet.write() method to show how that is done.
#
# SPDX-License-Identifier: BSD-2-Clause
# Copyright 2013-2023, John McNamara, jmcnamara@cpan.org
#
from xlsxwriter.workbook import Workbook
from xlsxwriter.worksheet import Worksheet
from xlsxwriter.worksheet import convert_cell_args
class MyWorksheet(Worksheet):
"""
Subclass of the XlsxWriter Worksheet class to override the default
write() method.
"""
@convert_cell_args
def write(self, row, col, *args):
data = args[0]
# Reverse strings to demonstrate the overridden method.
if isinstance(data, str):
data = data[::-1]
return self.write_string(row, col, data)
else:
# Call the parent version of write() as usual for other data.
return super(MyWorksheet, self).write(row, col, *args)
class MyWorkbook(Workbook):
"""
Subclass of the XlsxWriter Workbook class to override the default
Worksheet class with our custom class.
"""
def add_worksheet(self, name=None):
# Overwrite add_worksheet() to create a MyWorksheet object.
worksheet = super(MyWorkbook, self).add_worksheet(name, MyWorksheet)
return worksheet
# Create a new MyWorkbook object.
workbook = MyWorkbook("inheritance1.xlsx")
# The code from now on will be the same as a normal "Workbook" program.
worksheet = workbook.add_worksheet()
# Write some data to test the subclassing.
worksheet.write("A1", "Hello")
worksheet.write("A2", "World")
worksheet.write("A3", 123)
worksheet.write("A4", 345)
workbook.close()
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