注意
2017年2月
pyfolio API 已更改，不再 create_full_tear_sheet 具有 gross_lev 作为命名参数的参数。
因此，下面的示例不起作用
鉴于zipline和pyfolio之间的紧密集成，第一眼看到本教程认为它很困难，但是pyfolio可用于其他一些用途的示例测试数据实际上对于解码幕后运行的内容非常有用，因此集成奇迹。
集成了一个投资组合工具，即pyfolio在 工单#108中提出。
大多数作品已经在 backtrader到位：
-
分析仪基础结构
-
儿童分析仪
-
时间倒车分析仪
只需要一台主PyFolio 分析仪和3台简易儿童分析仪。再加上一个依赖于已经需要 pyfolio 的依赖项之一的方法，该依赖项是 pandas。
最具挑战性的部分...“获得正确的所有依赖关系”。
-
更新
pandas -
更新
numpy -
更新
scikit-lean -
更新
seaborn
在带有C编译器的类Unix环境中，一切都与时间有关。在Windows下，即使安装了特定的Microsoft编译器（在这种情况下是Python 2.7的链），事情也失败了。但是，一个拥有Windows最新软件包集合的知名网站提供了说明。如果您需要，请访问它：
如果不进行测试，集成将不完整，这就是为什么通常的样本一如既往地存在的原因。
无 PyFolio
该示例用于random.randint 决定何时买入/卖出，因此这只是检查一切是否正常：
$ ./pyfoliotest.py --printout --no-pyfolio --plot
输出：
Len,Datetime,Open,High,Low,Close,Volume,OpenInterest 0001,2005-01-03T23:59:59,38.36,38.90,37.65,38.18,25482800.00,0.00 BUY 1000 @%23.58 0002,2005-01-04T23:59:59,38.45,38.54,36.46,36.58,26625300.00,0.00 BUY 1000 @%36.58 SELL 500 @%22.47 0003,2005-01-05T23:59:59,36.69,36.98,36.06,36.13,18469100.00,0.00 ... SELL 500 @%37.51 0502,2006-12-28T23:59:59,25.62,25.72,25.30,25.36,11908400.00,0.00 0503,2006-12-29T23:59:59,25.42,25.82,25.33,25.54,16297800.00,0.00 SELL 250 @%17.14 SELL 250 @%37.01
有3个数据和几个买入和卖出操作是随机选择的，并分散在测试运行的2年默认寿命中
PyFolio run
pyfolio 在Jupyter Notebook中运行时，包括内联绘图，一切都很有效。这是笔记本
注意
runstrat get here [] 作为参数，使用缺省参数运行，并跳过笔记本本身传递的参数
%matplotlib inline
from __future__ import (absolute_import, division, print_function,
unicode_literals)
import argparse
import datetime
import random
import backtrader as bt
class St(bt.Strategy):
params = (
('printout', False),
('stake', 1000),
)
def __init__(self):
pass
def start(self):
if self.p.printout:
txtfields = list()
txtfields.append('Len')
txtfields.append('Datetime')
txtfields.append('Open')
txtfields.append('High')
txtfields.append('Low')
txtfields.append('Close')
txtfields.append('Volume')
txtfields.append('OpenInterest')
print(','.join(txtfields))
def next(self):
if self.p.printout:
# Print only 1st data ... is just a check that things are running
txtfields = list()
txtfields.append('%04d' % len(self))
txtfields.append(self.data.datetime.datetime(0).isoformat())
txtfields.append('%.2f' % self.data0.open[0])
txtfields.append('%.2f' % self.data0.high[0])
txtfields.append('%.2f' % self.data0.low[0])
txtfields.append('%.2f' % self.data0.close[0])
txtfields.append('%.2f' % self.data0.volume[0])
txtfields.append('%.2f' % self.data0.openinterest[0])
print(','.join(txtfields))
# Data 0
for data in self.datas:
toss = random.randint(1, 10)
curpos = self.getposition(data)
if curpos.size:
if toss > 5:
size = curpos.size // 2
self.sell(data=data, size=size)
if self.p.printout:
print('SELL {} @%{}'.format(size, data.close[0]))
elif toss < 5:
self.buy(data=data, size=self.p.stake)
if self.p.printout:
print('BUY {} @%{}'.format(self.p.stake, data.close[0]))
def runstrat(args=None):
args = parse_args(args)
cerebro = bt.Cerebro()
cerebro.broker.set_cash(args.cash)
dkwargs = dict()
if args.fromdate:
fromdate = datetime.datetime.strptime(args.fromdate, '%Y-%m-%d')
dkwargs['fromdate'] = fromdate
if args.todate:
todate = datetime.datetime.strptime(args.todate, '%Y-%m-%d')
dkwargs['todate'] = todate
data0 = bt.feeds.BacktraderCSVData(dataname=args.data0, **dkwargs)
cerebro.adddata(data0, name='Data0')
data1 = bt.feeds.BacktraderCSVData(dataname=args.data1, **dkwargs)
cerebro.adddata(data1, name='Data1')
data2 = bt.feeds.BacktraderCSVData(dataname=args.data2, **dkwargs)
cerebro.adddata(data2, name='Data2')
cerebro.addstrategy(St, printout=args.printout)
if not args.no_pyfolio:
cerebro.addanalyzer(bt.analyzers.PyFolio, _name='pyfolio')
results = cerebro.run()
if not args.no_pyfolio:
strat = results[0]
pyfoliozer = strat.analyzers.getbyname('pyfolio')
returns, positions, transactions, gross_lev = pyfoliozer.get_pf_items()
if args.printout:
print('-- RETURNS')
print(returns)
print('-- POSITIONS')
print(positions)
print('-- TRANSACTIONS')
print(transactions)
print('-- GROSS LEVERAGE')
print(gross_lev)
import pyfolio as pf
pf.create_full_tear_sheet(
returns,
positions=positions,
transactions=transactions,
gross_lev=gross_lev,
live_start_date='2005-05-01',
round_trips=True)
if args.plot:
cerebro.plot(style=args.plot_style)
def parse_args(args=None):
parser = argparse.ArgumentParser(
formatter_class=argparse.ArgumentDefaultsHelpFormatter,
description='Sample for pivot point and cross plotting')
parser.add_argument('--data0', required=False,
default='../../datas/yhoo-1996-2015.txt',
help='Data to be read in')
parser.add_argument('--data1', required=False,
default='../../datas/orcl-1995-2014.txt',
help='Data to be read in')
parser.add_argument('--data2', required=False,
default='../../datas/nvda-1999-2014.txt',
help='Data to be read in')
parser.add_argument('--fromdate', required=False,
default='2005-01-01',
help='Starting date in YYYY-MM-DD format')
parser.add_argument('--todate', required=False,
default='2006-12-31',
help='Ending date in YYYY-MM-DD format')
parser.add_argument('--printout', required=False, action='store_true',
help=('Print data lines'))
parser.add_argument('--cash', required=False, action='store',
type=float, default=50000,
help=('Cash to start with'))
parser.add_argument('--plot', required=False, action='store_true',
help=('Plot the result'))
parser.add_argument('--plot-style', required=False, action='store',
default='bar', choices=['bar', 'candle', 'line'],
help=('Plot style'))
parser.add_argument('--no-pyfolio', required=False, action='store_true',
help=('Do not do pyfolio things'))
import sys
aargs = args if args is not None else sys.argv[1:]
return parser.parse_args(aargs)
runstrat([])
Entire data start date: 2005-01-03 Entire data end date: 2006-12-29 Out-of-Sample Months: 20 Backtest Months: 3
[-0.012 -0.025]
D:drobinWinPython-64bit-2.7.10.3python-2.7.10.amd64libsite-packagespyfolioplotting.py:1210: FutureWarning: .resample() is now a deferred operation use .resample(...).mean() instead of .resample(...) **kwargs)
<matplotlib.figure.Figure at 0x23982b70>
范例用法：
$ ./pyfoliotest.py --help
usage: pyfoliotest.py [-h] [--data0 DATA0] [--data1 DATA1] [--data2 DATA2]
[--fromdate FROMDATE] [--todate TODATE] [--printout]
[--cash CASH] [--plot] [--plot-style {bar,candle,line}]
[--no-pyfolio]
Sample for pivot point and cross plotting
optional arguments:
-h, --help show this help message and exit
--data0 DATA0 Data to be read in (default:
../../datas/yhoo-1996-2015.txt)
--data1 DATA1 Data to be read in (default:
../../datas/orcl-1995-2014.txt)
--data2 DATA2 Data to be read in (default:
../../datas/nvda-1999-2014.txt)
--fromdate FROMDATE Starting date in YYYY-MM-DD format (default:
2005-01-01)
--todate TODATE Ending date in YYYY-MM-DD format (default: 2006-12-31)
--printout Print data lines (default: False)
--cash CASH Cash to start with (default: 50000)
--plot Plot the result (default: False)
--plot-style {bar,candle,line}
Plot style (default: bar)
--no-pyfolio Do not do pyfolio things (default: False)