def add_data_to_dataset(self, ds_name, data):
"""Adds data to the end of a dataset. The data is a list of dicts, with
each dict representing a parameter set."""
ds_list = [ds for ds in self.datasets if ds.name == ds_name]
if not ds_list:
raise self.InvalidInputException(
'No dataset with name %s found.' % ds_name)
dataset = ds_list[0]
assert isinstance(data, list)
for params in data:
assert isinstance(params, dict)
param_set = ParamSet()
for key in dataset.schema:
if not key in params:
raise KeyError('Key %s not found in parameter set' % key)
param = Parameter(name=key, obj_type='UnicodeString',
values=[params[key]])
param_set.params.append(param)
param_set_key = param_set.put()
dataset.param_sets.append(param_set_key)
self.put()
def test_paramset_class(self):
"""Test the ParamSet class."""
param1 = Parameter(name='param1', obj_type='Int', values=[6])
param2 = Parameter(name='param2', obj_type='Int', values=[8])
params = [param1, param2]
paramset = ParamSet(params=params)
paramset.put()
assert isinstance(paramset.params, list)
self.assertEqual(len(paramset.params), 2)
for param in paramset.params:
assert isinstance(param, Parameter)
def get_random_param_set(self):
"""Returns a list of parameter values. This is a parameter set that is
chosen at random from the dataset."""
if not self.param_sets:
return None
param_set_key = utils.get_random_choice(self.param_sets)
return ParamSet.get_by_id(param_set_key.id())