backtester

An event-driven backtester

About

This backtesting suite is based on a guide written by Quantstart's Michael Halls-Moore on how to write an event-driven backtester. Improvements to the code in the guide made by Douglas Denhartog has also been incorporated. The code has then been modified by me to actually run and include more features.

Guide:

1. Event-Driven Backtesting with Python - Part I
2. Event-Driven Backtesting with Python - Part II
3. Event-Driven Backtesting with Python - Part III
4. Event-Driven Backtesting with Python - Part IV
5. Event-Driven Backtesting with Python - Part V
6. Event-Driven Backtesting with Python - Part VI
7. Event-Driven Backtesting with Python - Part VII
8. Event-Driven Backtesting with Python - Part VIII

How To

Define Strategy

You can define a strategy by implementing the Strategy class found in strategy.py. There also exists three predefined strategies in strategy.py.

Backtest a Strategy

In order to choose strategy to backtest, you have to change the strategy class used in loop.py. You can also specify which CSV files/symbols that should be used in the backtesting suite by changing the CSV directory path and symbols in the same python file.
Note: The specified CSV files must have the same format as CSV files downloaded from Yahoo Finance. If the CSV files have another format, they need to be converted to Yahoo's format.
Special Case: If the specified CSV files were downloaded from Nasdaq, you can change the parser in data.py to the Nasdaq CSV parser.

To run the backtesting suite, use python3 loop.py from the terminal.

Dependencies

• pandas
• numpy
• matplotlib