Block inherits log listeners from parent

Author: vub

ethereum/blocks.py

@@ -555,6 +555,7 @@ def init_from_parent(cls, parent, coinbase, nonce=b'', extra_data=b'',
         block = Block(header, [], uncles, env=env or parent.env,
                       parent=parent, making=True)
         block.ancestor_hashes = [parent.hash] + parent.ancestor_hashes
+        block.log_listeners = parent.log_listeners
         return block
 
     def check_fields(self):