from tnzapi import TNZAPI

client = TNZAPI(
    Sender="YOUR_EMAIL_ADDRESS",      # API Username
    APIKey="YOUR_API_KEY",            # API Key
)

request = client.Send.SMS(
    Reference = "Test",               # Optional
    MessageText = "Test SMS",         # SMS Message
    Recipients = ["+64211231234"]     # Recipient
)

response = request.SendMessage()      # Send SMS

print(repr(response))