diff --git a/lib/fixtures.py b/lib/fixtures.py
index f75e568..78e6a63 100644
--- a/lib/fixtures.py
+++ b/lib/fixtures.py
@@ -8,6 +8,7 @@
 from lib.instance_configs import DEFAULT_INSTANCE_CONFIG
 from lib.types import Fixture
 
+
 def extract_fixtures(clients_to_test=SUPPORTED_CLIENTS) -> List[Fixture]:
     fixtures = []
     for client in SUPPORTED_CLIENTS:
@@ -24,6 +25,7 @@ def extract_fixtures(clients_to_test=SUPPORTED_CLIENTS) -> List[Fixture]:
 
     return fixtures
 
+
 def setup_fixture(fixture: Fixture):
     for instance in fixture.instances:
         start_instance(instance)
diff --git a/lib/instance_configs.py b/lib/instance_configs.py
index 6b460af..e7bafc1 100644
--- a/lib/instance_configs.py
+++ b/lib/instance_configs.py
@@ -2,7 +2,7 @@
 from sclients import ENR
 
 DEFAULT_BEACON_STATE_PATH = 'ssz/default.ssz'
-DEFAULT_ENR =  {
+DEFAULT_ENR = {
     'enr': 'enr:-LK4QJCIZoViytOOmAzAbdOJODwQ36PhjXwvXlTFTloTzpawVpvPRmtrM6UZdPmOGck5yPZ9AbgmwyZnE3jm4jX0Yx0Bh2F0dG5ldHOIAAAAAAAAAACEZXRoMpBGMkSJAAAAAf__________gmlkgnY0gmlwhH8AAAGJc2VjcDI1NmsxoQOnBq2PcxFfkFACZvJz91cd-UKaTPtLv7zYJSJyAtq60YN0Y3CCIyiDdWRwgiMp',
     'enr_teku': 'enr:-KG4QF9w4w5DORl2-AtVaqK6n-VF3e-2p5fm4uqDLwlR8cQ4MVk2yJ68YkEUTASbbJJ123CKYDDY1KdfBWOuVrmsZtUChGV0aDKQGK5MywAAAAH__________4JpZIJ2NIJpcIR_AAABiXNlY3AyNTZrMaEDpwatj3MRX5BQAmbyc_dXHflCmkz7S7-82CUicgLautGDdGNwgiMog3VkcIIjKA',
     'private_key': 'eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
diff --git a/lib/logging_tests.py b/lib/logging_tests.py
index eee5701..fb49eec 100644
--- a/lib/logging_tests.py
+++ b/lib/logging_tests.py
@@ -4,6 +4,7 @@
 
 LOGGING_TESTS_DIR = 'logging_tests'
 
+
 def all_logging_test_files():
     tests = []
     for root, dirs, files in os.walk(LOGGING_TESTS_DIR):
diff --git a/lib/runner.py b/lib/runner.py
index 85eaeaf..a710796 100644
--- a/lib/runner.py
+++ b/lib/runner.py
@@ -7,6 +7,7 @@
 
 TESTS_DIR = 'tests'
 
+
 def all_test_files():
     tests = []
     for root, dirs, files in os.walk(TESTS_DIR):
@@ -18,9 +19,11 @@ def all_test_files():
 
     return tests
 
+
 def file_to_module(script):
     return script.replace('/', '.')[0:-3]
 
+
 def return_code_to_status(return_code):
     if return_code == 0:
         return color('\u2713', fg='green')
@@ -28,6 +31,7 @@ def return_code_to_status(return_code):
     else:
         return color('\u2717', fg='red')
 
+
 def run_module(module_str, args):
     module = importlib.import_module(module_str)
 
@@ -39,9 +43,11 @@ def run_module(module_str, args):
 
     return (return_code, logs)
 
+
 def file_matches_filter(file, file_filter):
     return file_filter is None or file == file_filter
 
+
 def run_test_files(fixture_name, files, args):
     print(fixture_name)
 
diff --git a/steth.py b/steth.py
index 31b4973..0745646 100755
--- a/steth.py
+++ b/steth.py
@@ -10,6 +10,7 @@
 from lib.runner import run_test_files, all_test_files, file_matches_filter
 from lib.logging_tests import all_logging_test_files
 
+
 def run_test_cmd(args):
     clients = SUPPORTED_CLIENTS if args.client is None else [args.client]
 
@@ -41,13 +42,14 @@ def run_logging_test(args):
 
     failed = False
     for client in SUPPORTED_CLIENTS:
-        return_code= run_test_files(client, test_files, {})
+        return_code = run_test_files(client, test_files, {})
         if return_code != 0:
             failed = True
 
     if failed:
         exit(1)
 
+
 if __name__ == '__main__':
     steth = argparse.ArgumentParser(description='Stethoscope tool for running multi-client Eth2 scenarios')
     steth_sub = steth.add_subparsers()
@@ -58,7 +60,8 @@ def run_logging_test(args):
     test.add_argument('-o', '--only', help='run specific tests by name')
     test.set_defaults(func=run_test_cmd)
 
-    test = steth_sub.add_parser('logging_test', help='Display example logs from ./steth.py test. Useful for testing CI integration')
+    test = steth_sub.add_parser(
+        'logging_test', help='Display example logs from ./steth.py test. Useful for testing CI integration')
     test.set_defaults(func=run_logging_test)
 
     args = steth.parse_args()
diff --git a/tests/reqresp/metadata.py b/tests/reqresp/metadata.py
index 79428f3..8b15341 100644
--- a/tests/reqresp/metadata.py
+++ b/tests/reqresp/metadata.py
@@ -3,6 +3,7 @@
 
 from ..utils import parse_chunk_response, with_rumor
 
+
 class Metadata(Container):
     seq_number: uint64
     attnets: Bitvector[64]
diff --git a/tests/utils.py b/tests/utils.py
index 7237b28..8a3d48d 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -4,6 +4,7 @@
 from eth2spec.utils.ssz.ssz_typing import Container
 from pyrum import SubprocessConn, Rumor
 
+
 def with_rumor(async_run_fn):
     async def wrapped_run_fn(args):
         async with SubprocessConn(cmd='./bin/rumor bare --level=trace') as conn:
@@ -18,12 +19,14 @@ async def wrapped_run_fn(args):
 
     return wrapped_run_fn
 
+
 def parse_chunk_response(resp):
     if 'data' not in resp:
         return (None, [f"request error: 'data' field not in response"])
 
     return (resp['data'], [])
 
+
 def enr_to_fork_digest(enr):
     eth2 = enr.eth2
     eth2 = eth2[2:] if eth2.startswith('0x') else eth2