无法将 CSV 附加到 SendGrid 电子邮件

Question

无法将 CSV 附加到通过 SendGrid API 发送的电子邮件。

我已经尝试了将内容参数作为 base64 编码的常规字符串传递的每次迭代，但我仍然收到相同的错误消息。

from sendgrid import SendGridAPIClient
from sendgrid.helpers.mail import Mail, Content, Email, Attachment
import numpy as np
import base64

fake_data = np.random.randint(5000, size=(82, 2))
np.savetxt('predictions_test.csv', fake_data, delimiter=",")

message = Mail(
    from_email='FROM_EMAIL',
    to_emails='TO_EMAIL',
    subject='Sending with Twilio SendGrid is Fun',
    html_content='<strong>Test Email Body</strong>')


with open('predictions_test.csv', 'rb') as fd:
    b64data = base64.b64encode(fd.read())
    fd.close()


attachment = Attachment()
attachment.content = str(b64data,'utf-8')
attachment.filename = "predictions_test.csv"
attachment.disposition = "attachment"

message.add_attachment(attachment)

try:
    sg = SendGridAPIClient('APIKEY')
    response = sg.send(message)
    print(response.status_code)
    print(response.body)
    print(response.headers)
except Exception as e:
    print(str(e.body))

Returns the following Error messages is the following: 

b'{"errors":[{"message":"The attachment content is required.","field":"attachments.0.content","help":"http://sendgrid.com/docs/API_Reference/Web_API_v3/Mail/errors.html#message.attachments.content"},{"message":"The attachment filename parameter is required.","field":"attachments.0.filename","help":"http://sendgrid.com/docs/API_Reference/Web_API_v3/Mail/errors.html#message.attachments.filename"}]}'

Answer 1

您正在尝试添加为“base64”，但我们也可以添加如下所示的二进制数据

with open('predictions_test.csv', 'rb') as fd:
    attachment = Attachment()
    attachment.content = fd.read()
    attachment.filename = "predictions_test.csv"
    attachment.disposition = "attachment"
    message.add_attachment(attachment)
    fd.close()