“f1a9ee2451362df4d11e7afc43cc44afeac32ea0”上不存在“examples/C++/imdb/abtest_get_data.py”
* a draft of trainer.test() * polish trainer.test() * polish trainer.test() * update code format * update * polish code * polish code * polish code * Make trainer.test follow the rule of returning [loss, metric, metric, ..]