Decode SendGrid Event ID in Python

sendgrid_eid.py

def decode_eid(eid):
    """
    Decodes a SendGrid event id (sg_event_id) and returns as uuid
    """
    eid_len = len(eid)

    if eid_len == 22:
        res = uuid.UUID(bytes=base64.urlsafe_b64decode(eid + "=="))
    elif eid_len == 48:
        res = uuid.UUID(base64.urlsafe_b64decode(eid).decode("ascii"))
    else:
        raise Exception("Unsupported sendgrid event id: {}".format(eid))

    assert res.variant == uuid.RFC_4122 and res.version == 4

    return res