Update pyevmasm/evmasm.py

Co-Authored-By: Disconnect3d <dominik.b.czarnota@gmail.com>

Author: feliam

pyevmasm/evmasm.py

@@ -275,7 +275,7 @@ def writes_to_memory(self):
     @property
     def reads_from_memory(self):
         """ True if the instruction reads from memory """
-        return self.semantics in ('MLOAD', 'CREATE', 'CALL', 'STATICCALL', 'DELEGATECALL', 'CALLCODE', 'RETURN', 'REVERT')
+        return self.semantics in {'MLOAD', 'CREATE', 'CALL', 'STATICCALL', 'DELEGATECALL', 'CALLCODE', 'RETURN', 'REVERT'}
 
     @property
     def writes_to_storage(self):