APIError: {"detail":"exceeded limit

[andreacortis]

I have tried this

import pyopenstates
import os
os.environ['OPENSTATES_API_KEY'] = "a4....."
results = pyopenstates.search_bills(state="ny", q="taxi")

but consistently got this error

APIError: {"detail":"exceeded limit of 10/min: 11}

without ever getting anything in return from the API. Tried at different time intervals. Could you please advise?

--- EDIT ---

When using the set_api_key functions I get results.

import pyopenstates
pyopenstates.set_api_key("a4...")
results = pyopenstates.search_bills(state="ny", q="taxi")

In [6]: len(results)
Out[6]: 179

Is this an issue maybe related to outdated the documentation?