如何使用 openpyxl 将 excel 作为电子邮件附件发送而不保存 [On The Fly]

Question

我一直在尝试使用 openpyxl 将 excel 作为电子邮件附件发送，而不在 Django 中保存 [On The Fly]

Answer 1

您可以将工作簿对象保存到 BytesIO 实例（from io import BytesIO）

output = BytesIO()
workbook.save(output)

然后，您可以使用 Django EmailMessage 类创建电子邮件并将 BytesIO 对象作为文件附加为第二个参数。

email = EmailMessage(
    'Hello',
    'Body goes here',
    '[email protected]',
    ['[email protected]', '[email protected]'],
    ['[email protected]'],
    reply_to=['[email protected]'],
    headers={'Message-ID': 'foo'},
)

email.attach('file.xlsx', output.getvalue() , 'application/vnd.ms-excel')

Answer 2

这是通过电子邮件发送 Excel 文件的示例。

from io import BytesIO

import xlwt
from django.core.mail import EmailMessage

def send_excel_email():
    excelfile = BytesIO()

    wb = xlwt.Workbook(encoding='utf-8')
    ws = wb.add_sheet('Sheetname')

    ws.write(0, 0, 'Firstname')
    ws.write(0, 1, 'Surname')
    ws.write(1, 0, 'Hans')
    ws.write(1, 1, 'Muster')

    wb.save(excelfile)

    email = EmailMessage()
    email.subject = 'This subject'
    email.body = 'This context'
    email.from_email = '[email protected]'
    email.to = ['[email protected]']
    email.attach('test_file.xls', excelfile.getvalue(), 'application/ms-excel')
    email.send()

Answer 3

这是我使用 Django 2 、Python 3 和 openxl 的方法

from io import BytesIO

output = BytesIO() # Create a file like object in memory
wb_object.save(output) # Write my workbook object into that memory

# Setup my email
msg = EmailMultiAlternatives(subject, "", from_email, to_email, cc=cc, bcc=bcc)

# Attach the excel file with a name, the actual attachment , and a MIMEtype.
msg.attach('my_invoice.xlsx', output.getvalue(), 'application/vnd.ms-excel')

#The content here is the email content in its body and its type which is just text.
msg.attach_alternative(content, "text/html")

# Now send it .
msg.send()