#6 Zipline. Quantopian is a free, community-centered, hosted platform for building and executing trading strategies. This is the third part of a series of articles on backtesting trading strategies in Python. Here's an example where we run an algorithm with zipline, then produce tear sheets for that algorithm. The zipline version seems also to require a bit of knowledge of numpy. See the full Zipline Install Documentation_ for detailed instructions. Note: Installing Zipline is slightly more involved than the average Python package. Hello and welcome to a tutorial covering how to use Zipline locally. It is a formidable algorithmic trading library for Python, evident by the fact that it powers Quantopian, a free platform for building and executing trading strategies. Zipline is a package that ties the statistics, the data structures, and the data sources all together. Python 3.5 or 3.6 (when using Zipline 1.3.0) or 3.6 (when using Zipline 1.4.1) only (this is a limitation of Zipline) Microsoft Windows An active Norgate Data subscription The obscurity in backtrader is what happens with the code defined during __init__. It allows data scientists to easily define features in a simple configuration language. Zipline is currently used in production as the backtesting and live-trading engine powering Quantopian-- a free, community-centered, hosted platform for building and executing trading strategies.. Join our Community! Zipline is a Pythonic algorithmic trading library. It is also possible to define your own trading calendar and you can find more information in zipline’s documentation here. Zipline currently supports Python 2.7, 3.5, and 3.6, and may be installed via either pip or conda. It is an event-driven system for backtesting. Bear in mind that we need to pass the exact range of dates of the previously downloaded data. In this example, we start with 2017–01–02, as this is the first day for which we have pricing data. The framework then provides access to point-in-time correct features – for both – offline model training and online inference. Zipline is a Pythonic algorithmic trading library. Zipline reduces this task from months to days – by making the process declarative. It is an event-driven system for backtesting. That’s why it’s common to use a backtesting platform, such as Quantopian, for your backtesters. On the other hand backtrader has to replace max with an internal Max, but seems somehow digestible given the resemblance to the original python built-in function. It’s powered by zipline, a Python library for algorithmic trading. Zipline algorithm analysis example in pyfolio.