PR feedback and fix for linter

Author: hwwhww

eth/beacon/db/chain.py

@@ -229,7 +229,7 @@ def _get_canonical_block_hash_by_slot(
             db: BaseDB,
             slot: int) -> Hash32:
         validate_slot(slot)
-        return cls._get_canonical_block_hash(db, slot)    
+        return cls._get_canonical_block_hash(db, slot)
 
     def get_canonical_head(self) -> BaseBeaconBlock:
         """

eth/beacon/helpers.py

@@ -439,7 +439,7 @@ def aggregate_attestation_record(last_justified_slot: int,
         block.shard_block_hash,
         last_justified_slot,
     )
-    
+
     bitfield, sigs = aggregate_votes(
         message,
         votes,
@@ -475,7 +475,7 @@ def aggregate_votes(message: bytes,
     bitfield = pipe(
         bitfield,
         *(
-            functools.partial(set_voted, index=committee_index)
+            set_voted(index=committee_index)
             for committee_index in committee_indices
         )
     )

eth/beacon/state_machines/base.py

@@ -433,7 +433,7 @@ def attest_proposed_block(self,
         """
         Return the initial attestation by the block proposer.
 
-        The proposer broadcasts zir attestation with the proposed block.
+        The proposer broadcasts their attestation with the proposed block.
         """
         block_committees_info = get_block_committees_info(
             block,
@@ -499,9 +499,8 @@ def validate_randao_reveal(cls) -> None:
     #
     # Attestation validation
     #
-    @classmethod
-    def validate_attestation(cls,
-                             block: BaseBeaconBlock,
+    @staticmethod
+    def validate_attestation(block: BaseBeaconBlock,
                              parent_block: BaseBeaconBlock,
                              crystallized_state: CrystallizedState,
                              active_state: ActiveState,

eth/utils/bitfield.py

@@ -17,6 +17,7 @@ def has_voted(bitfield: bytes, index: int) -> bool:
     return bool(bitfield[index // 8] & (128 >> (index % 8)))
 
 
+@curry
 def set_voted(bitfield: bytes, index: int) -> bytes:
     byte_index = index // 8
     bit_index = index % 8