dump model structure

tools/program.py

@@ -75,6 +75,8 @@ class AttrDict(dict):
 
 global_config = AttrDict()
 
+default_config = {'Global': {'debug': False, }}
+
 
 def load_config(file_path):
     """
@@ -85,6 +87,7 @@ def load_config(file_path):
 
     Returns: global config
     """
+    merge_config(default_config)
     _, ext = os.path.splitext(file_path)
     assert ext in ['.yml', '.yaml'], "only support yaml files for now"
     merge_config(yaml.load(open(file_path), Loader=yaml.Loader))