import requests

user = 'my_username'
password= 'my password'
url = 'my_url'

print ("Accessing API..")
req = requests.get(url = url, auth=(user, password))
print ("Accessed!")
out = req.json()
#print(out)

url = 'url?start=0&rows=1000'

url = 'url?start=1000&rows=1000'