Example code using the Nexmo Voice API and Environment Variables

vapi.py

import os
import nexmo


client = nexmo.Client(
    application_id=os.getenv("NEXMO_APPLICATION_ID"),
    private_key=os.getenv("NEXMO_PRIVATE_KEY", "./private.key"),
)

response = client.create_call(
    {
        "to": [{"type": "phone", "number": os.getenv("TO_NUMBER")}],
        "from": {"type": "phone", "number": os.getenv("NEXMO_NUMBER")},
        "answer_url": [f"{os.getenv('VAPI_URL')}/answer"],
    }
)