Example: Polars Excel with multiple dataframes

##############################################################################
#
# An example of writing multiple dataframes to worksheets using Polars and
# XlsxWriter.
#
# SPDX-License-Identifier: BSD-2-Clause
# Copyright 2013-2023, John McNamara, jmcnamara@cpan.org
#

import xlsxwriter
import polars as pl

# Create some Polars dataframes from some data.
df1 = pl.DataFrame({"Data": [11, 12, 13, 14]})
df2 = pl.DataFrame({"Data": [21, 22, 23, 24]})
df3 = pl.DataFrame({"Data": [31, 32, 33, 34]})

with xlsxwriter.Workbook("polars_multiple.xlsx") as workbook:
    df1.write_excel(workbook=workbook)
    df2.write_excel(workbook=workbook)
    df3.write_excel(workbook=workbook)