fix imports, which detect a bug and fix get_active_validator_indices too

Author: ChihChengLiang

eth/beacon/helpers.py

@@ -33,6 +33,7 @@
 )
 from eth.beacon.enums import (
     SignatureDomain,
+    ValidatorRegistryDeltaFlag,
 )
 from eth.beacon.types.shard_committees import (
     ShardCommittee,
@@ -44,13 +45,13 @@
 import functools
 
 from eth.beacon.typing import (
-    ShardNumber,
+    Bitfield,
     BLSPubkey,
+    Ether,
+    Gwei,
+    ShardNumber,
     SlotNumber,
     ValidatorIndex,
-    Bitfield,
-    Gwei,
-    Ether,
 )
 
 if TYPE_CHECKING:
@@ -162,7 +163,7 @@ def get_active_validator_indices(
 #
 @to_tuple
 def _get_shards_committees_for_shard_indices(
-        shard_indices: Sequence[Sequence[ShardNumber]],
+        shard_indices: Sequence[Sequence[ValidatorIndex]],
         start_shard: ShardNumber,
         total_validator_count: int,
         shard_count: int) -> Iterable[ShardCommittee]:

eth/beacon/types/exits.py

@@ -8,8 +8,9 @@
     uint384,
 )
 from eth.beacon.typing import (
-    SlotNumber,
     BLSSignature,
+    SlotNumber,
+    ValidatorIndex,
 )
 from eth.beacon.constants import EMPTY_SIGNATURE
 

eth/beacon/types/shard_committees.py

@@ -13,6 +13,7 @@
 )
 from eth.beacon.typing import (
     ShardNumber,
+    ValidatorIndex,
 )
 
 

eth/beacon/types/shard_reassignment_records.py

@@ -7,6 +7,7 @@
 from eth.beacon.typing import (
     SlotNumber,
     ShardNumber,
+    ValidatorIndex,
 )
 
 

eth/beacon/types/validator_registry_delta_block.py

@@ -8,6 +8,11 @@
 )
 from eth.beacon.typing import (
     BLSPubkey,
+    ValidatorIndex,
+)
+
+from eth.beacon.enums import (
+    ValidatorRegistryDeltaFlag,
 )
 
 from eth.rlp.sedes import (