explicitly use Optiona type for fork_version in compute_domain

Co-Authored-By: Carl Beekhuizen <carl@ethereum.org>
ethereum · Jan 22, 2020 · a8a8018 · a8a8018
1 parent cf18b04
commit a8a8018
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/specs/phase0/beacon-chain.md b/specs/phase0/beacon-chain.md
@@ -788,7 +788,7 @@ def compute_activation_exit_epoch(epoch: Epoch) -> Epoch:
 #### `compute_domain`
 
 ```python
-def compute_domain(domain_type: DomainType, fork_version: Version=None) -> Domain:
+def compute_domain(domain_type: DomainType, fork_version: Optional[Version]=None) -> Domain:
     """
     Return the domain for the ``domain_type`` and ``fork_version``.
     """