feat: disable logger when log is not enabled (#321)

Author: BustDot

casbin/core_enforcer.py

@@ -69,6 +69,8 @@ def __init__(self, model=None, adapter=None, enable_log=False):
 
         if enable_log:
             configure_logging()
+        else:
+            logging.disable(logging.CRITICAL)
 
     def init_with_file(self, model_path, policy_path):
         """initializes an enforcer with a model file and a policy file."""