def _space_params(params, space: str, r: int = None) -> Dict:
d = params.get(space)
if d:
# Round floats to `r` digits after the decimal point if requested
return round_dict(d, r) if r else d
return {}
def log_trials_result(self) -> None:
"""
Display Best hyperopt result
"""
results = sorted(self.trials, key=itemgetter('loss'))
best_result = results[0]
params = best_result['params']
log_str = self.format_results_logstring(best_result)
print(f"\nBest result:\n\n{log_str}\n")
if self.config.get('print_json'):
result_dict: Dict = {}
if self.has_space('buy') or self.has_space('sell'):
result_dict['params'] = {}
if self.has_space('buy'):
result_dict['params'].update({
p.name: params.get(p.name)
for p in self.hyperopt_space('buy')
})
if self.has_space('sell'):
result_dict['params'].update({
p.name: params.get(p.name)
for p in self.hyperopt_space('sell')
})
if self.has_space('roi'):
# Convert keys in min_roi dict to strings because
# rapidjson cannot dump dicts with integer keys...
# OrderedDict is used to keep the numeric order of the items
# in the dict.
result_dict['minimal_roi'] = OrderedDict(
(str(k), v)
for k, v in self.custom_hyperopt.generate_roi_table(
params).items())
if self.has_space('stoploss'):
result_dict['stoploss'] = params.get('stoploss')
print(
rapidjson.dumps(result_dict,
default=str,
number_mode=rapidjson.NM_NATIVE))
else:
if self.has_space('buy'):
print('Buy hyperspace params:')
pprint(
{
p.name: params.get(p.name)
for p in self.hyperopt_space('buy')
},
indent=4)
if self.has_space('sell'):
print('Sell hyperspace params:')
pprint(
{
p.name: params.get(p.name)
for p in self.hyperopt_space('sell')
},
indent=4)
if self.has_space('roi'):
print("ROI table:")
# Round printed values to 5 digits after the decimal point
pprint(round_dict(
self.custom_hyperopt.generate_roi_table(params), 5),
indent=4)
if self.has_space('stoploss'):
# Also round to 5 digits after the decimal point
print(f"Stoploss: {round(params.get('stoploss'), 5)}")
