Library stuck on retrieving pricing

Nobody has claimed this yet.

Hello Lyft team! Thanks for putting out this library, it has been very useful for me and others I've referred you to.

Here is a simple code I'm trying to run (Used to work just fine)
```
from __future__ import print_function
import awspricing
print("Retrieving AWS pricing")
ec2_offer = awspricing.offer('AmazonEC2')
print("Retrieving AWS pricing")
```

And my execution goes like this:
```
$ python3 pricingtest.py
Retrieving AWS pricing
```

It has been like this for more than 6 hours (tried more than one).

Any ideas on what might be happening?

Start by reproducing the Python example at awspricing.offer('AmazonEC2') and trace where pricing retrieval waits. Inspect the AWS pricing retrieval path and any related tests; done means the call completes or reports a clear failure instead of remaining stuck.

Written by the indexing model from the issue text.