Example: Pandas Excel output with datetimes

An example of converting a Pandas dataframe with datetimes to an Excel file with a default datetime and date format using Pandas and XlsxWriter.

##############################################################################
#
# An example of converting a Pandas dataframe with datetimes to an xlsx file
# with a default datetime and date format using Pandas and XlsxWriter.
#
# SPDX-License-Identifier: BSD-2-Clause
# Copyright 2013-2023, John McNamara, jmcnamara@cpan.org
#

import pandas as pd
from datetime import datetime, date

# Create a Pandas dataframe from some datetime data.
df = pd.DataFrame(
    {
        "Date and time": [
            datetime(2015, 1, 1, 11, 30, 55),
            datetime(2015, 1, 2, 1, 20, 33),
            datetime(2015, 1, 3, 11, 10),
            datetime(2015, 1, 4, 16, 45, 35),
            datetime(2015, 1, 5, 12, 10, 15),
        ],
        "Dates only": [
            date(2015, 2, 1),
            date(2015, 2, 2),
            date(2015, 2, 3),
            date(2015, 2, 4),
            date(2015, 2, 5),
        ],
    }
)

# Create a Pandas Excel writer using XlsxWriter as the engine.
# Also set the default datetime and date formats.
writer = pd.ExcelWriter(
    "pandas_datetime.xlsx",
    engine="xlsxwriter",
    datetime_format="mmm d yyyy hh:mm:ss",
    date_format="mmmm dd yyyy",
)

# Convert the dataframe to an XlsxWriter Excel object.
df.to_excel(writer, sheet_name="Sheet1")

# Get the xlsxwriter workbook and worksheet objects in order
# to set the column widths and make the dates clearer.
workbook = writer.book
worksheet = writer.sheets["Sheet1"]

# Get the dimensions of the dataframe.
(max_row, max_col) = df.shape

# Set the column widths, to make the dates clearer.
worksheet.set_column(1, max_col, 20)

# Close the Pandas Excel writer and output the Excel file.
writer.close()