def run(self, source, sim_params=None, benchmark_return_source=None):
"""Run the algorithm.
:Arguments:
source : can be either:
- pandas.DataFrame
- zipline source
- list of zipline sources
If pandas.DataFrame is provided, it must have the
following structure:
* column names must consist of ints representing the
different sids
* index must be DatetimeIndex
* array contents should be price info.
:Returns:
daily_stats : pandas.DataFrame
Daily performance metrics such as returns, alpha etc.
"""
if isinstance(source, (list, tuple)):
assert self.sim_params is not None or sim_params is not None, \
"""When providing a list of sources, \
sim_params have to be specified as a parameter
or in the constructor."""
elif isinstance(source, pd.DataFrame):
# if DataFrame provided, wrap in DataFrameSource
source = DataFrameSource(source)
elif isinstance(source, pd.Panel):
source = DataPanelSource(source)
if not isinstance(source, (list, tuple)):
self.sources = [source]
else:
self.sources = source
# Check for override of sim_params.
# If it isn't passed to this function,
# use the default params set with the algorithm.
# Else, we create simulation parameters using the start and end of the
# source provided.
if not sim_params:
if not self.sim_params:
start = source.start
end = source.end
sim_params = create_simulation_parameters(
start=start,
end=end,
capital_base=self.capital_base
)
else:
sim_params = self.sim_params
# Create transforms by wrapping them into StatefulTransforms
self.transforms = []
for namestring, trans_descr in self.registered_transforms.iteritems():
sf = StatefulTransform(
trans_descr['class'],
*trans_descr['args'],
**trans_descr['kwargs']
)
sf.namestring = namestring
self.transforms.append(sf)
# create transforms and zipline
self.gen = self._create_generator(sim_params)
# loop through simulated_trading, each iteration returns a
# perf dictionary
perfs = []
for perf in self.gen:
perfs.append(perf)
# convert perf dict to pandas dataframe
daily_stats = self._create_daily_stats(perfs)
return daily_stats
def run(self, source, sim_params=None, benchmark_return_source=None):
"""Run the algorithm.
:Arguments:
source : can be either:
- pandas.DataFrame
- zipline source
- list of zipline sources
If pandas.DataFrame is provided, it must have the
following structure:
* column names must consist of ints representing the
different sids
* index must be DatetimeIndex
* array contents should be price info.
:Returns:
daily_stats : pandas.DataFrame
Daily performance metrics such as returns, alpha etc.
"""
if isinstance(source, (list, tuple)):
assert self.sim_params is not None or sim_params is not None, \
"""When providing a list of sources, \
sim_params have to be specified as a parameter
or in the constructor."""
elif isinstance(source, pd.DataFrame):
# if DataFrame provided, wrap in DataFrameSource
source = DataFrameSource(source)
elif isinstance(source, pd.Panel):
source = DataPanelSource(source)
if not isinstance(source, (list, tuple)):
self.sources = [source]
else:
self.sources = source
# Check for override of sim_params.
# If it isn't passed to this function,
# use the default params set with the algorithm.
# Else, we create simulation parameters using the start and end of the
# source provided.
if not sim_params:
if not self.sim_params:
start = source.start
end = source.end
sim_params = create_simulation_parameters(
start=start, end=end, capital_base=self.capital_base)
else:
sim_params = self.sim_params
# Create transforms by wrapping them into StatefulTransforms
self.transforms = []
for namestring, trans_descr in self.registered_transforms.iteritems():
sf = StatefulTransform(trans_descr['class'], *trans_descr['args'],
**trans_descr['kwargs'])
sf.namestring = namestring
self.transforms.append(sf)
# create transforms and zipline
self.gen = self._create_generator(sim_params)
# loop through simulated_trading, each iteration returns a
# perf dictionary
perfs = []
for perf in self.gen:
perfs.append(perf)
# convert perf dict to pandas dataframe
daily_stats = self._create_daily_stats(perfs)
return daily_stats
def create_test_zipline(**config):
"""
:param config: A configuration object that is a dict with:
- sid - an integer, which will be used as the security ID.
- order_count - the number of orders the test algo will place,
defaults to 100
- order_amount - the number of shares per order, defaults to 100
- trade_count - the number of trades to simulate, defaults to 101
to ensure all orders are processed.
- algorithm - optional parameter providing an algorithm. defaults
to :py:class:`zipline.test.algorithms.TestAlgorithm`
- trade_source - optional parameter to specify trades, if present.
If not present :py:class:`zipline.sources.SpecificEquityTrades`
is the source, with daily frequency in trades.
- slippage: optional parameter that configures the
:py:class:`zipline.gens.tradingsimulation.TransactionSimulator`.
Expects an object with a simulate mehod, such as
:py:class:`zipline.gens.tradingsimulation.FixedSlippage`.
:py:mod:`zipline.finance.trading`
- transforms: optional parameter that provides a list
of StatefulTransform objects.
"""
assert isinstance(config, dict)
sid_list = config.get('sid_list')
if not sid_list:
sid = config.get('sid')
sid_list = [sid]
concurrent_trades = config.get('concurrent_trades', False)
if 'order_count' in config:
order_count = config['order_count']
else:
order_count = 100
if 'order_amount' in config:
order_amount = config['order_amount']
else:
order_amount = 100
if 'trade_count' in config:
trade_count = config['trade_count']
else:
# to ensure all orders are filled, we provide one more
# trade than order
trade_count = 101
#-------------------
# Create the Algo
#-------------------
if 'algorithm' in config:
test_algo = config['algorithm']
else:
test_algo = TestAlgorithm(
sid,
order_amount,
order_count,
sim_params=config.get('sim_params',
factory.create_simulation_parameters())
)
#-------------------
# Trade Source
#-------------------
if 'trade_source' in config:
trade_source = config['trade_source']
else:
trade_source = factory.create_daily_trade_source(
sid_list,
trade_count,
test_algo.sim_params,
concurrent=concurrent_trades
)
if trade_source:
test_algo.set_sources([trade_source])
#-------------------
# Benchmark source
#-------------------
test_algo.benchmark_return_source = config.get('benchmark_source', None)
#-------------------
# Transforms
#-------------------
transforms = config.get('transforms', None)
if transforms is not None:
test_algo.set_transforms(transforms)
#-------------------
# Slippage
# ------------------
slippage = config.get('slippage', None)
if slippage is not None:
test_algo.set_slippage(slippage)
# ------------------
# generator/simulator
sim = test_algo.get_generator()
return sim