HTTPError: HTTP Error 401: Unauthorized for sendgrid integration with python
<pre><code>def sendEmail(to,apNumber,paperType,zipedFile):

    sg = sendgrid.SendGridAPIClient(apikey=os.environ.get("API-KEY"))

    to_email = mail.Email( "to@email.com")
    from_email = mail.Email( "from@email.com" )
    subject = 'This is a test email'
    content = mail.Content('text/plain', 'Example message.')
    message = mail.Mail(from_email, subject, to_email, content)
    response = sg.client.mail.send.post(request_body = message.get())
    return response
</code></pre>