跑yahoo_answer dataset 时遇到的问题：
run_config:
tf_random_seed: null
allow_soft_placement: true
log_device_placement: false
intra_op_parallelism_threads: 10
inter_op_parallelism_threads: 10
allow_growth: true
[ 2020-07-02 17:57:52,623 INFO main.py:69 22512 ] Loading all modules ...
Traceback (most recent call last):
File "/home/xubo/delta/core/ops/py_x_ops.py", line 27, in
so_lib_file = tf.io.gfile.glob(file_dir + '/x_ops*.so')[0].split('/')[-1]
IndexError: list index out of range

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "delta/delta/main.py", line 134, in
entry()
File "delta/delta/main.py", line 121, in entry
app.run(main)
File "/home/xubo/anaconda3/envs/delta-pip-py3.6/lib/python3.6/site-packages/absl/app.py", line 299, in run
_run_main(main, args)
File "/home/xubo/anaconda3/envs/delta-pip-py3.6/lib/python3.6/site-packages/absl/app.py", line 250, in _run_main
sys.exit(main(argv))
File "delta/delta/main.py", line 70, in main
import_all_modules_for_register(config, only_nlp=FLAGS.only_nlp)
File "/home/xubo/delta/delta/utils/register.py", line 228, in import_all_modules_for_register
importlib.import_module(full_name)
File "/home/xubo/anaconda3/envs/delta-pip-py3.6/lib/python3.6/importlib/init.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 994, in _gcd_import
File "", line 971, in _find_and_load
File "", line 955, in _find_and_load_unlocked
File "", line 665, in _load_unlocked
File "", line 678, in exec_module
File "", line 219, in _call_with_frames_removed
File "/home/xubo/delta/delta/data/task/text_cls_task.py", line 22, in
from delta.data.task.base_text_task import TextTask
File "/home/xubo/delta/delta/data/task/base_text_task.py", line 24, in
from delta.data.preprocess.text_ops import clean_english_str_tf
File "/home/xubo/delta/delta/data/preprocess/text_ops.py", line 22, in
from core.ops import py_x_ops
File "/home/xubo/delta/core/ops/py_x_ops.py", line 29, in
raise FileNotFoundError(f"No x_ops*.so match under dir: {file_dir}")
FileNotFoundError: No x_ops*.so match under dir: /home/xubo/delta/core/ops