Use clearer name on auxillary helper imports

tests/plugins/eth2/beacon/helpers.py

@@ -16,7 +16,7 @@
     create_mock_genesis,
 )
 
-helpers = importlib.import_module('tests.core.p2p-proto.bcc.helpers')
+bcc_helpers = importlib.import_module('tests.core.p2p-proto.bcc.helpers')
 
 
 NUM_VALIDATORS = 8

tests/plugins/eth2/beacon/test_receive_server.py

@@ -63,16 +63,17 @@
 )
 
 from .helpers import (
-    helpers,
+    bcc_helpers
 )
 
+
 from eth2.beacon.types.attestations import (
     default_attestation,
 )
 
 
-class FakeChain(_TestnetChain):
-    chaindb_class = helpers.FakeAsyncBeaconChainDB
+class FakeChain(TestnetChain):
+    chaindb_class = bcc_helpers.FakeAsyncBeaconChainDB
 
     def import_block(
             self,
@@ -96,7 +97,7 @@ def import_block(
 
 async def get_fake_chain() -> FakeChain:
     genesis_config = Eth2GenesisConfig(XIAO_LONG_BAO_CONFIG)
-    chain_db = await helpers.get_genesis_chain_db(genesis_config=genesis_config)
+    chain_db = await bcc_helpers.get_genesis_chain_db(genesis_config=genesis_config)
     return FakeChain(base_db=chain_db.db, genesis_config=genesis_config)
 
 
@@ -126,7 +127,7 @@ async def get_peer_and_receive_server(request, event_loop, event_bus) -> Tuple[
 
     (
         alice, alice_peer_pool, bob, bob_peer_pool
-    ) = await helpers.get_directly_linked_peers_in_peer_pools(
+    ) = await bcc_helpers.get_directly_linked_peers_in_peer_pools(
         request,
         event_loop,
         alice_chain_db=alice_chain.chaindb,
@@ -169,9 +170,9 @@ def finalizer():
 
 def test_orphan_block_pool():
     pool = OrphanBlockPool()
-    b0 = helpers.create_test_block()
-    b1 = helpers.create_test_block(parent=b0)
-    b2 = helpers.create_test_block(parent=b0, state_root=b"\x11" * 32)
+    b0 = bcc_helpers.create_test_block()
+    b1 = bcc_helpers.create_test_block(parent=b0)
+    b2 = bcc_helpers.create_test_block(parent=b0, state_root=b"\x11" * 32)
     # test: add
     pool.add(b1)
     assert b1 in pool._pool

tests/plugins/eth2/beacon/test_validator.py

@@ -40,7 +40,7 @@
 from .helpers import (
     genesis_block,
     genesis_state,
-    helpers,
+    bcc_helpers,
     index_to_pubkey,
     keymap,
 )
@@ -91,7 +91,7 @@ def get_chain_from_genesis(db, indices):
 
 
 async def get_validator(event_loop, event_bus, indices) -> Validator:
-    chain_db = await helpers.get_chain_db()
+    chain_db = await bcc_helpers.get_chain_db()
     chain = get_chain_from_genesis(chain_db.db, indices)
     peer_pool = FakePeerPool()
     validator_privkeys = {