fix messenger_qa task
@@ -27,7 +27,7 @@ def main():
class_name = 'DefaultTeacher'
my_module = importlib.import_module(module_name)
task_class = getattr(my_module, class_name)
- task_opt = {}
+ task_opt = opt.copy()
task_opt['datatype'] = 'train'
task_opt['datapath'] = opt['datapath']
