Updated sample code for Chapter 17 - "Concurrency with futures" From the book "Fluent Python" by Luciano Ramalho (O'Reilly, 2015) http://shop.oreilly.com/product/0636920032519.do This directory contains code updated to run with Python 3.7 and **aiohttp** 3.5. When the first edition of "Fluent Python" was written, the **asyncio** package was provisional, and the latest version of **aiohttp** was 0.13.1. The API for both packages had significant breaking changes.