PDF file attachment Error 400

[JonathanVandal]

Issue Summary

I'm trying to attach a PDF file to my email sent with sendgrid. But the Sendgrid Python library is throwing an error HTTP Error 400: Bad Request.

Steps to Reproduce

Here is my code :

sg = sendgrid.SendGridAPIClient(apikey=os.environ.get('SENDGRID_API_KEY'))

from_email = Email("from@example.com")
subject = "subject"
to_email = Email("to@example.com")
content = Content("text/html", email_body)

pdf = open(pdf_path, "rb").read().encode("base64")
attachment = Attachment()
attachment.set_content(pdf)
attachment.set_type("application/pdf")
attachment.set_filename("test.pdf")
attachment.set_disposition("attachment")
attachment.set_content_id(number)

mail = Mail(from_email, subject, to_email, content)
mail.add_attachment(attachment)

response = sg.client.mail.send.post(request_body=mail.get())

print(response.status_code)
print(response.body)
print(response.headers)

I think this is a problem due to the base64 encode

pdf = open(pdf_path, "rb").read().encode("base64")

I tried with this line to test :

sendgrid-python/examples/helpers/mail/mail_example.py

Line 66 in ca96c8d

attachment.set_content("TG9yZW0gaXBzdW0gZG9sb3Igc2l0IGFtZXQsIGNvbnNlY3RldHVyIGFkaXBpc2NpbmcgZWxpdC4gQ3JhcyBwdW12")

And it works. But when I'm using my PDF base64 encoded I have the error 400

Technical details:

• sendgrid-python Version: master latest commit
• Python Version: 2.7.9

[JonathanVandal]

I found a solution. I replaced this line :

pdf = open(pdf_path, "rb").read().encode("base64")

By this :

with open(pdf_path,'rb') as f:
    data = f.read()
    f.close()

encoded = base64.b64encode(data)

Now it works. I can send encoded file in the set_content :

attachment.set_content(encoded)

[thinkingserious]

Thanks for the sharing the solution @JonathanVandal!

Please fill out this form so we can send you some swag :)

I'm re-opening this issue so that we can put this use case here: https://github.com/sendgrid/sendgrid-python/blob/master/USE_CASES.md

[JonathanVandal]

Hi, I filled out the form thank you so much.

It's a good idea to put this snippet for the file attachment.

[30ThreeDegrees]

Im currently having issues with this same thing at the moment, i was receiving the 400 error and with the code change the 400 error went away but now i am hitting the issue where my code is still not picking up the PDF file from my "/tmp" folder.

import os
from sendgrid.helpers.mail import *
import base64


sg = sendgrid.SendGridAPIClient(apikey='')
from_email = Email("")
to_email = Email("")
subject = "Attachment test"
content = Content("text/plain", "and easy to do anywhere, even with Python")
mail = Mail(from_email, subject, to_email, content)
response = sg.client.mail.send.post(request_body=mail.get())


with open('/tmp/test.pdf','rb') as f:
    data = f.read()
    f.close()

encoded = base64.b64encode(data)


attachment1 = Attachment()
attachment1.set_content(encoded)
attachment1.set_type("pdf")
attachment1.set_filename("test.pdf")
attachment1.set_disposition("inline")
attachment1.set_content_id("Ticket")
mail.add_attachment(attachment1)

print(response.status_code)
print(response.body)
print(response.headers)


if response.status_code == 202:
    print ("Message was successful")

Any help with this would be fantstic cheers in advanced.

[ittus]

@120GBSSD: Which python version are you using?

[30ThreeDegrees]

@ittus Sorry i am using 2.7 on ubuntu.

[JonathanVandal]

@120GBSSD Does it works if you remove the code to attach the pdf ? Do you receive the email ?

[30ThreeDegrees]

@JonathanVandal Yes the code does work without, it even works with the pdf attachment code included it just won't pick up the pdf so when i run the code it sends the email correctly but just with no attachment.