def _retrieve_data_in_trunk(self, indices, trunk=None):
if trunk is None:
trunk = self._get_batch_size()
grouped_indices = self._regroup(indices, trunk)
lock = threading.Lock()
self.stock_info = None
def update_each_group(group):
info = self.latest(group)
lock.acquire()
if self.stock_info is None:
self.stock_info = info
else:
self.stock_info = self.stock_info.append(info)
lock.release()
multi_thread(update_each_group, grouped_indices)
return self.stock_info
def test_multi_thread(self):
triple = partial(operator.mul, 3)
result = multi_thread(triple, [2, 5, 7])
assert_that(result, equal_to([6, 15, 21]))
def test_multi_thread_callback(self):
double = partial(operator.mul, 2)
result = multi_thread(int, ['3', '5', '9'], double, 3)
assert_that(result, equal_to([6, 10, 18]))