diff --git a/tests/conftest.py b/tests/conftest.py
index da7d3ccd..11b21b22 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,3 +1,4 @@
+"""Shared pytest config."""
 import sys
 from tqdm import tqdm
 from pytest import fixture
diff --git a/tests/tests_perf.py b/tests/tests_perf.py
index 7c1e3271..6a244fbe 100644
--- a/tests/tests_perf.py
+++ b/tests/tests_perf.py
@@ -159,7 +159,7 @@ def assert_performance(thresh, name_left, time_left, name_right, time_right):
 
 
 @retry_on_except()
-def test_iter_basic_overhead(capsys):
+def test_iter_basic_overhead():
     """Test overhead of iteration based tqdm"""
     total = int(1e6)
 
@@ -180,7 +180,7 @@ def test_iter_basic_overhead(capsys):
 
 
 @retry_on_except()
-def test_manual_basic_overhead(capsys):
+def test_manual_basic_overhead():
     """Test overhead of manual tqdm"""
     total = int(1e6)
 
@@ -211,7 +211,7 @@ def worker(total, blocking=True):
 
 @retry_on_except()
 @patch_lock(thread=True)
-def test_lock_args(capsys):
+def test_lock_args():
     """Test overhead of nonblocking threads"""
     ThreadPoolExecutor = importorskip('concurrent.futures').ThreadPoolExecutor
 
@@ -234,7 +234,7 @@ def test_lock_args(capsys):
 
 
 @retry_on_except(10)
-def test_iter_overhead_hard(capsys):
+def test_iter_overhead_hard():
     """Test overhead of iteration based tqdm (hard)"""
     total = int(1e5)
 
@@ -256,7 +256,7 @@ def test_iter_overhead_hard(capsys):
 
 
 @retry_on_except(10)
-def test_manual_overhead_hard(capsys):
+def test_manual_overhead_hard():
     """Test overhead of manual tqdm (hard)"""
     total = int(1e5)
 
@@ -278,7 +278,7 @@ def test_manual_overhead_hard(capsys):
 
 
 @retry_on_except(10)
-def test_iter_overhead_simplebar_hard(capsys):
+def test_iter_overhead_simplebar_hard():
     """Test overhead of iteration based tqdm vs simple progress bar (hard)"""
     total = int(1e4)
 
@@ -301,7 +301,7 @@ def test_iter_overhead_simplebar_hard(capsys):
 
 
 @retry_on_except(10)
-def test_manual_overhead_simplebar_hard(capsys):
+def test_manual_overhead_simplebar_hard():
     """Test overhead of manual tqdm vs simple progress bar (hard)"""
     total = int(1e4)
 
diff --git a/tqdm/notebook.py b/tqdm/notebook.py
index 12ec53e5..bcda1050 100644
--- a/tqdm/notebook.py
+++ b/tqdm/notebook.py
@@ -73,6 +73,7 @@ __all__ = ['tqdm_notebook', 'tnrange', 'tqdm', 'trange']
 
 
 class TqdmHBox(HBox):
+    """`ipywidgets.HBox` with a pretty representation"""
     def _repr_json_(self, pretty=None):
         if not hasattr(self, "pbar"):
             return {}
@@ -88,7 +89,7 @@ class TqdmHBox(HBox):
             return super(TqdmHBox, self).__repr__()
         return self.pbar.format_meter(**self._repr_json_(pretty))
 
-    def _repr_pretty_(self, pp, cycle):
+    def _repr_pretty_(self, pp, *_, **__):
         pp.text(self.__repr__(True))