def construct_individual_strategy(self, br, spot_df, spot_df2, asset_df,
tech_params, key):
"""
construct_individual_strategy - Combines the signal with asset returns to find the returns of an individual
strategy
Parameters
----------
br : BacktestRequest
Parameters for backtest such as start and finish dates
spot_df : pandas.DataFrame
Market time series for generating signals
spot_df2 : pandas.DataFrame
Market time series for generated signals (can be of different frequency)
tech_params : TechParams
Parameters for generating signals
Returns
-------
cumportfolio : pandas.DataFrame
cash_backtest : CashBacktest
"""
cash_backtest = CashBacktest()
signal_df = self.construct_signal(spot_df, spot_df2,
tech_params) # get trading signal
cash_backtest.calculate_trading_PnL(br, asset_df,
signal_df) # calculate P&L
cumpnl = cash_backtest.get_cumpnl()
if br.write_csv: cumpnl.to_csv(self.DUMP_CSV + key + ".csv")
cumportfolio = cash_backtest.get_cumportfolio()
if br.calc_stats:
cumportfolio.columns = [
key + ' ' + str(cash_backtest.get_portfolio_pnl_desc()[0])
]
else:
cumportfolio.columns = [key]
return cumportfolio, cash_backtest
def run_arbitrary_sensitivity(self, strat, parameter_list = None, parameter_names = None,
pretty_portfolio_names = None, parameter_type = None):
asset_df, spot_df, spot_df2, basket_dict = strat.fill_assets()
port_list = None
for i in range(0, len(parameter_list)):
br = strat.fill_backtest_request()
current_parameter = parameter_list[i]
# for calculating P&L
for k in current_parameter.keys():
setattr(br, k, current_parameter[k])
strat.br = br # for calculating signals
signal_df = strat.construct_signal(spot_df, spot_df2, br.tech_params)
cash_backtest = CashBacktest()
self.logger.info("Calculating... " + pretty_portfolio_names[i])
cash_backtest.calculate_trading_PnL(br, asset_df, signal_df)
stats = str(cash_backtest.get_portfolio_pnl_desc()[0])
port = cash_backtest.get_cumportfolio().resample('B')
port.columns = [pretty_portfolio_names[i] + ' ' + stats]
if port_list is None:
port_list = port
else:
port_list = port_list.join(port)
pf = PlotFactory()
gp = GraphProperties()
gp.color = 'Blues'
gp.resample = 'B'
gp.file_output = self.DUMP_PATH + strat.FINAL_STRATEGY + ' ' + parameter_type + '.png'
gp.scale_factor = self.scale_factor
gp.title = strat.FINAL_STRATEGY + ' ' + parameter_type
pf.plot_line_graph(port_list, adapter = 'pythalesians', gp = gp)
def construct_individual_strategy(self, br, spot_df, spot_df2, asset_df, tech_params, key):
"""
construct_individual_strategy - Combines the signal with asset returns to find the returns of an individual
strategy
Parameters
----------
br : BacktestRequest
Parameters for backtest such as start and finish dates
spot_df : pandas.DataFrame
Market time series for generating signals
spot_df2 : pandas.DataFrame
Market time series for generated signals (can be of different frequency)
tech_params : TechParams
Parameters for generating signals
Returns
-------
cumportfolio : pandas.DataFrame
cash_backtest : CashBacktest
"""
cash_backtest = CashBacktest()
signal_df = self.construct_signal(spot_df, spot_df2, tech_params, br) # get trading signal
cash_backtest.calculate_trading_PnL(br, asset_df, signal_df) # calculate P&L
cumpnl = cash_backtest.get_cumpnl()
if br.write_csv: cumpnl.to_csv(self.DUMP_CSV + key + ".csv")
cumportfolio = cash_backtest.get_cumportfolio()
if br.calc_stats:
cumportfolio.columns = [key + ' ' + str(cash_backtest.get_portfolio_pnl_desc()[0])]
else:
cumportfolio.columns = [key]
return cumportfolio, cash_backtest
def run_arbitrary_sensitivity(self,
strat,
parameter_list=None,
parameter_names=None,
pretty_portfolio_names=None,
parameter_type=None):
asset_df, spot_df, spot_df2, basket_dict = strat.fill_assets()
port_list = None
tsd_list = []
for i in range(0, len(parameter_list)):
br = strat.fill_backtest_request()
current_parameter = parameter_list[i]
# for calculating P&L
for k in current_parameter.keys():
setattr(br, k, current_parameter[k])
strat.br = br # for calculating signals
signal_df = strat.construct_signal(spot_df, spot_df2,
br.tech_params, br)
cash_backtest = CashBacktest()
self.logger.info("Calculating... " + pretty_portfolio_names[i])
cash_backtest.calculate_trading_PnL(br, asset_df, signal_df)
tsd_list.append(cash_backtest.get_portfolio_pnl_tsd())
stats = str(cash_backtest.get_portfolio_pnl_desc()[0])
port = cash_backtest.get_cumportfolio().resample('B')
port.columns = [pretty_portfolio_names[i] + ' ' + stats]
if port_list is None:
port_list = port
else:
port_list = port_list.join(port)
# reset the parameters of the strategy
strat.br = strat.fill_backtest_request()
pf = PlotFactory()
gp = GraphProperties()
ir = [t.inforatio()[0] for t in tsd_list]
# gp.color = 'Blues'
# plot all the variations
gp.resample = 'B'
gp.file_output = self.DUMP_PATH + strat.FINAL_STRATEGY + ' ' + parameter_type + '.png'
gp.scale_factor = self.scale_factor
gp.title = strat.FINAL_STRATEGY + ' ' + parameter_type
pf.plot_line_graph(port_list, adapter='pythalesians', gp=gp)
# plot all the IR in a bar chart form (can be easier to read!)
gp = GraphProperties()
gp.file_output = self.DUMP_PATH + strat.FINAL_STRATEGY + ' ' + parameter_type + ' IR.png'
gp.scale_factor = self.scale_factor
gp.title = strat.FINAL_STRATEGY + ' ' + parameter_type
summary = pandas.DataFrame(index=pretty_portfolio_names,
data=ir,
columns=['IR'])
pf.plot_bar_graph(summary, adapter='pythalesians', gp=gp)
return port_list
def run_arbitrary_sensitivity(self, strat, parameter_list = None, parameter_names = None,
pretty_portfolio_names = None, parameter_type = None):
asset_df, spot_df, spot_df2, basket_dict = strat.fill_assets()
port_list = None
tsd_list = []
for i in range(0, len(parameter_list)):
br = strat.fill_backtest_request()
current_parameter = parameter_list[i]
# for calculating P&L
for k in current_parameter.keys():
setattr(br, k, current_parameter[k])
strat.br = br # for calculating signals
signal_df = strat.construct_signal(spot_df, spot_df2, br.tech_params, br)
cash_backtest = CashBacktest()
self.logger.info("Calculating... " + pretty_portfolio_names[i])
cash_backtest.calculate_trading_PnL(br, asset_df, signal_df)
tsd_list.append(cash_backtest.get_portfolio_pnl_tsd())
stats = str(cash_backtest.get_portfolio_pnl_desc()[0])
port = cash_backtest.get_cumportfolio().resample('B').mean()
port.columns = [pretty_portfolio_names[i] + ' ' + stats]
if port_list is None:
port_list = port
else:
port_list = port_list.join(port)
# reset the parameters of the strategy
strat.br = strat.fill_backtest_request()
pf = PlotFactory()
gp = GraphProperties()
ir = [t.inforatio()[0] for t in tsd_list]
# gp.color = 'Blues'
# plot all the variations
gp.resample = 'B'
gp.file_output = self.DUMP_PATH + strat.FINAL_STRATEGY + ' ' + parameter_type + '.png'
gp.scale_factor = self.scale_factor
gp.title = strat.FINAL_STRATEGY + ' ' + parameter_type
pf.plot_line_graph(port_list, adapter = 'pythalesians', gp = gp)
# plot all the IR in a bar chart form (can be easier to read!)
gp = GraphProperties()
gp.file_output = self.DUMP_PATH + strat.FINAL_STRATEGY + ' ' + parameter_type + ' IR.png'
gp.scale_factor = self.scale_factor
gp.title = strat.FINAL_STRATEGY + ' ' + parameter_type
summary = pandas.DataFrame(index = pretty_portfolio_names, data = ir, columns = ['IR'])
pf.plot_bar_graph(summary, adapter = 'pythalesians', gp = gp)
return port_list
cache_algo = 'internet_load_return') # how to return data
ltsf = LightTimeSeriesFactory()
asset_df = ltsf.harvest_time_series(time_series_request)
spot_df = asset_df
logger.info("Running backtest...")
# use technical indicator to create signals
# (we could obviously create whatever function we wanted for generating the signal dataframe)
tech_ind = TechIndicator()
tech_ind.create_tech_ind(spot_df, indicator, tech_params); signal_df = tech_ind.get_signal()
# use the same data for generating signals
cash_backtest.calculate_trading_PnL(br, asset_df, signal_df)
port = cash_backtest.get_cumportfolio()
port.columns = [indicator + ' = ' + str(tech_params.sma_period) + ' ' + str(cash_backtest.get_portfolio_pnl_desc()[0])]
signals = cash_backtest.get_porfolio_signal()
# print the last positions (we could also save as CSV etc.)
print(signals.tail(1))
pf = PlotFactory()
gp = GraphProperties()
gp.title = "Thalesians FX trend strategy"
gp.source = 'Thalesians/BBG (calc with PyThalesians Python library)'
gp.scale_factor = 1
gp.file_output = 'output_data/fx-trend-example.png'
pf.plot_line_graph(port, adapter = 'pythalesians', gp = gp)
cache_algo = 'internet_load_return') # how to return data
ltsf = LightTimeSeriesFactory()
asset_df = ltsf.harvest_time_series(time_series_request)
spot_df = asset_df
logger.info("Running backtest...")
# use technical indicator to create signals
# (we could obviously create whatever function we wanted for generating the signal dataframe)
tech_ind = TechIndicator()
tech_ind.create_tech_ind(spot_df, indicator, tech_params); signal_df = tech_ind.get_signal()
# use the same data for generating signals
cash_backtest.calculate_trading_PnL(br, asset_df, signal_df)
port = cash_backtest.get_cumportfolio()
port.columns = [indicator + ' = ' + str(tech_params.sma_period) + ' ' + str(cash_backtest.get_portfolio_pnl_desc()[0])]
signals = cash_backtest.get_porfolio_signal()
# print the last positions (we could also save as CSV etc.)
print(signals.tail(1))
pf = PlotFactory()
gp = GraphProperties()
gp.title = "Thalesians FX trend strategy"
gp.source = 'Thalesians/BBG (calc with PyThalesians Python library)'
gp.scale_factor = 1
gp.file_output = 'output_data/fx-trend-example.png'
pf.plot_line_graph(port, adapter = 'pythalesians', gp = gp)
