Return Excel file from Pandas Dataframe in Django

dfToexcel.py

import pandas as pd
from io import BytesIO
from django.http import HttpResponse

# suppose to have a Dataframe object
# inside a Django view

df = pd.DataFrame(...)
with BytesIO() as b:
    # Use the StringIO object as the filehandle.
    writer = pd.ExcelWriter(b, engine='xlsxwriter')
    df.to_excel(writer, sheet_name='Sheet1')
    writer.save()
    filename = 'test'
    content_type = 'application/vnd.ms-excel'
    response = HttpResponse(b.getvalue(), content_type=content_type)
    response['Content-Disposition'] = 'attachment; filename="' + filename + '.xlsx"'
    return response