Documentation incorrect for EU and Enterprise customers

[nathancatania]

Putting this out there in case other people come across this issue.

Problem

The current documentation for EU and Enterprise customers is incorrect:

For SparkPost EU and Enterprise accounts, pass in a second parameter to set the API host.

from sparkpost import SparkPost
sp = SparkPost('YOUR API KEY', 'https://api.eu.sparkpost.com')

This causes a resolver error:

requests.exceptions.ConnectionError: HTTPSConnectionPool(host='https', port=443): Max retries exceeded with url: //api.eu.sparkpost.com/api/v1/transmissions (Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x7fe226f75630>: Failed to establish a new connection: [Errno -2] Name or service not known'))

Cause

When the second parameter is passed, the constructor appends "https://" to the string (assuming that a domain will be passed and NOT the base URL). This causes the resultant URL to be https://https://api.eu.sparkpost.com/api/v1/transmissions, which causes connectivity failure.

Solution

When passing the API host, drop the https://. Working example:

from sparkpost import SparkPost
sp = SparkPost('YOUR API KEY', 'api.eu.sparkpost.com')