Merge #205: add comment to __getattr__ in RawProxy to clarify the intent of check

65377c7 add comment to __getattr__ in RawProxy to clarify the intent of check (Dmitry Petukhov)

Pull request description:

  add clarifying comment, see #203

Tree-SHA512: 48ec48ed4e893c7f70499806c14f116054c32d31e75434d643c9ba37528df6493559835696176867fddd6bbdcccd74dba69d0b385916d8367948984b96a948cd

Author: petertodd

bitcoin/rpc.py

@@ -296,7 +296,10 @@ def __init__(self,
 
     def __getattr__(self, name):
         if name.startswith('__') and name.endswith('__'):
-            # Python internal stuff
+            # Prevent RPC calls for non-existing python internal attribute
+            # access. If someone tries to get an internal attribute
+            # of RawProxy instance, and the instance does not have this
+            # attribute, we do not want the bogus RPC call to happen.
             raise AttributeError
 
         # Create a callable to do the actual call