Tradingene's package for algorithm backtest
Tradingene: A Package For Backtesting Trading Algorithms
See full documentation here
The Tradingene package turns your computer into a tool for developing and backtesting trading strategies you write in the Python programming language. Having been developed and backtested, these ones can be then easily adapted for live trading at the Tradingene Platform.
Tradingne can be installed via pip for python3:
pip3 install tradingene
An algorithm performs a trading logic that is implemented in a user defined function. If we want to test profitability of this logic we have to perform a backtest which consists of a series of consecutive calls of this (user defined) function.
Suppose we came up with the following trading logic:
- open a long position if the closing price of a bar is greater than the open price;
- open a short position if the closing price of a bar is less than the open price;
- do not make any changes to the position otherwise.
To start coding we need to define the name and the regime of the algorithm as well as the start_date and the end_date of the backtesting period:
from datetime import datetime from tradingene.algorithm_backtest.tng import TNG from tradingene.backtest_statistics import backtest_statistics as bs name = "Cornucopia" regime = "SP" start_date = datetime(2018, 9, 1) end_date = datetime(2018, 10, 1)
After that we are ready to create an instance of the
TNG class. The instance named
alg will contain all the methods required for backtesting.
alg = TNG(name, regime, start_date, end_date)
Next we are able to specify an instrument and timeframe (measured in minutes) that we will use in our backtest:
alg.addInstrument("btcusd") alg.addTimeframe("btcusd", 1440)
Implementing trading logic
In the next step we will code the
onBar() function that will implement our trading logic:
def onBar(instrument): if instrument.open > instrument.close: # If the price moved down we take a short position alg.sell() elif instrument.open < instrument.close: # If the price moved up we take a long position alg.buy() else: # If the price did not change then do nothing pass
instrument variable contains price values as well as the values of specified technical indicators.
Now we are ready to run a backtest:
Results of backtest
After the backtest is complete we may retrieve the statistics to estimate the performance of our algorithm:
stats = bs.BacktestStatistics(alg) stats.backtest_results(plot=True, filename="backtest_stats")
With these lines of code we make the backtest statistics formatted into an html page named
backtest_stats.html. This page also shows us a cumulative profit plot, just like the one presented below:
Machine learning and loading data
A powerful feature of the
Tradingene package is the ability to load, recalculate and convert data into a form suitable to train machine learning models with. That's why an algotrader can easily create and backtest "learning" trading robots.
With a series of our mini-lessons you'll learn how to use neural networks for solving classification and regression problems (with respect to the challenges of trading) as well as how to engage an SVM etc.
See more on loading data.
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