fix parser bool

model_zoo/official/gnn/gcn/train.py

@@ -19,6 +19,7 @@ GCN training script.
 
 import time
 import argparse
+import ast
 
 import numpy as np
 from matplotlib import pyplot as plt
@@ -51,7 +52,7 @@ def train():
     parser.add_argument('--train_nodes_num', type=int, default=140, help='Nodes numbers for training')
     parser.add_argument('--eval_nodes_num', type=int, default=500, help='Nodes numbers for evaluation')
     parser.add_argument('--test_nodes_num', type=int, default=1000, help='Nodes numbers for test')
-    parser.add_argument('--save_TSNE', type=bool, default=False, help='Whether to save t-SNE graph')
+    parser.add_argument('--save_TSNE', type=ast.literal_eval, default=False, help='Whether to save t-SNE graph')
     args_opt = parser.parse_args()
 
     np.random.seed(args_opt.seed)