Fix the bug that can't update the parameter use_gpu

PaddleNLP/language_model/args.py

@@ -17,6 +17,7 @@ from __future__ import division
 from __future__ import print_function
 
 import argparse
+import ast
 import distutils.util
 
 
@@ -36,7 +37,10 @@ def parse_args():
         "--data_path", type=str, help="all the data for train,valid,test")
     parser.add_argument('--para_init', action='store_true')
     parser.add_argument(
-        '--use_gpu', type=bool, default=False, help='whether using gpu')
+        '--use_gpu',
+        type=ast.literal_eval,
+        default=False,
+        help='whether using gpu')
     parser.add_argument(
         '--log_path',
         help='path of the log file. If not set, logs are printed to console')