Gettting Failed to install 'ringcentral_client==0.6.0' in Python 3.7

Hello all

Have the following code its Python 3.7 When I try to import ring_central client I get Any ideas?

Thanks

----- Failed to install 'ringcentral_client==0.6.0' -----

The code I have so far...

import time
import json
import os
from ringcentral_client import PubNub
from ringcentral import SDK
from ringcentral_client import RestClient, SANDBOX_SERVER
#DO NOT MODIFY ANY OF THIS OR IT WILL BLOW UP IN YOUR FACE
rc= RestClient("blahbla", "other","https://platform.devtest.ringcentral.com")
rc.authorize('+1XXXXXXX, ''', 'mypasword')

ringout_body = {
"to": {"phoneNumber": 'number'},
"from": {"phoneNumber": 'othernumber'},
"callerId": {"phoneNumber": 'id'},
"playPrompt": "true"
}

response = rc.post('/restapi/v1.0/account/~/extension/~/ring-out',ringout_body)