Merge pull request #1136 from ethereum/fix_lint

Fix linter errors

scripts/phase0/build_spec.py

@@ -13,9 +13,17 @@ from typing import (
     NewType,
     Tuple,
 )
-from eth2spec.utils.minimal_ssz import *
+from eth2spec.utils.minimal_ssz import (
+    SSZType,
+    hash_tree_root,
+    signing_root,
+)
 from eth2spec.utils.hash_function import hash
-from eth2spec.utils.bls import *
+from eth2spec.utils.bls import (
+    bls_aggregate_pubkeys,
+    bls_verify,
+    bls_verify_multiple,
+)
 
 
 # stub, will get overwritten by real var

specs/core/0_beacon-chain.md

@@ -1776,7 +1776,8 @@ def process_deposit(state: BeaconState, deposit: Deposit) -> None:
     validator_pubkeys = [v.pubkey for v in state.validator_registry]
     if pubkey not in validator_pubkeys:
         # Verify the deposit signature (proof of possession).
-        # Invalid signatures are allowed by the deposit contract, and hence included on-chain, but must not be processed.
+        # Invalid signatures are allowed by the deposit contract,
+        # and hence included on-chain, but must not be processed.
         # Note: deposits are valid across forks, hence the deposit domain is retrieved directly from `bls_domain`
         if not bls_verify(
             pubkey, signing_root(deposit.data), deposit.data.signature, bls_domain(DOMAIN_DEPOSIT)

test_libs/pyspec/eth2spec/test/block_processing/test_process_transfer.py

@@ -140,7 +140,13 @@ def test_insufficient_balance(state):
 def test_no_dust_sender(state):
     sender_index = get_active_validator_indices(state, get_current_epoch(state))[-1]
     balance = state.balances[sender_index]
-    transfer = get_valid_transfer(state, sender_index=sender_index, amount=balance - spec.MIN_DEPOSIT_AMOUNT + 1, fee=0, signed=True)
+    transfer = get_valid_transfer(
+        state,
+        sender_index=sender_index,
+        amount=balance - spec.MIN_DEPOSIT_AMOUNT + 1,
+        fee=0,
+        signed=True,
+    )
 
     # un-activate so validator can transfer
     state.validator_registry[transfer.sender].activation_epoch = spec.FAR_FUTURE_EPOCH

test_libs/pyspec/eth2spec/test/conftest.py

@@ -3,6 +3,7 @@ from eth2spec.phase0 import spec
 # We import pytest only when it's present, i.e. when we are running tests.
 # The test-cases themselves can be generated without installing pytest.
 
+
 def module_exists(module_name):
     try:
         __import__(module_name)

test_libs/pyspec/eth2spec/test/helpers/block.py

@@ -77,4 +77,3 @@ def build_empty_block(state, slot=None, signed=False):
 
 def build_empty_block_for_next_slot(state, signed=False):
     return build_empty_block(state, state.slot + 1, signed=signed)
-

test_libs/pyspec/eth2spec/test/sanity/test_slots.py

@@ -55,4 +55,3 @@ def test_over_epoch_boundary(state):
     yield 'slots', slots
     process_slots(state, state.slot + slots)
     yield 'post', state
-