diff --git a/examples/basics/parse.py b/examples/basics/parse.py
index 04f4528ef..5d052449f 100644
--- a/examples/basics/parse.py
+++ b/examples/basics/parse.py
@@ -4,7 +4,6 @@
 import av
 import av.datasets
 
-
 # We want an H.264 stream in the Annex B byte-stream format.
 # We haven't exposed bitstream filters yet, so we're gonna use the `ffmpeg` CLI.
 h264_path = "night-sky.h264"
@@ -29,14 +28,12 @@
 codec = av.CodecContext.create("h264", "r")
 
 while True:
-
     chunk = fh.read(1 << 16)
 
     packets = codec.parse(chunk)
     print(f"Parsed {len(packets)} packets from {len(chunk)} bytes:")
 
     for packet in packets:
-
         print("   ", packet)
 
         frames = codec.decode(packet)
diff --git a/examples/basics/remux.py b/examples/basics/remux.py
index c4779f4e9..befc24f8a 100644
--- a/examples/basics/remux.py
+++ b/examples/basics/remux.py
@@ -1,7 +1,6 @@
 import av
 import av.datasets
 
-
 input_ = av.open(av.datasets.curated("pexels/time-lapse-video-of-night-sky-857195.mp4"))
 output = av.open("remuxed.mkv", "w")
 
@@ -11,7 +10,6 @@
 out_stream = output.add_stream(template=in_stream)
 
 for packet in input_.demux(in_stream):
-
     print(packet)
 
     # We need to skip the "flushing" packets that `demux` generates.
diff --git a/examples/basics/save_keyframes.py b/examples/basics/save_keyframes.py
index 3de25f84a..98c7c0be3 100644
--- a/examples/basics/save_keyframes.py
+++ b/examples/basics/save_keyframes.py
@@ -1,7 +1,6 @@
 import av
 import av.datasets
 
-
 content = av.datasets.curated("pexels/time-lapse-video-of-night-sky-857195.mp4")
 with av.open(content) as container:
     # Signal that we only want to look at keyframes.
@@ -9,7 +8,6 @@
     stream.codec_context.skip_frame = "NONKEY"
 
     for frame in container.decode(stream):
-
         print(frame)
 
         # We use `frame.pts` as `frame.index` won't make must sense with the `skip_frame`.
diff --git a/examples/basics/thread_type.py b/examples/basics/thread_type.py
index 51c23a79e..fab539b26 100644
--- a/examples/basics/thread_type.py
+++ b/examples/basics/thread_type.py
@@ -3,7 +3,6 @@
 import av
 import av.datasets
 
-
 print("Decoding with default (slice) threading...")
 
 container = av.open(
diff --git a/examples/numpy/barcode.py b/examples/numpy/barcode.py
index 64c13e198..bd40f17a3 100644
--- a/examples/numpy/barcode.py
+++ b/examples/numpy/barcode.py
@@ -1,10 +1,9 @@
-from PIL import Image
 import numpy as np
+from PIL import Image
 
 import av
 import av.datasets
 
-
 container = av.open(
     av.datasets.curated("pexels/time-lapse-video-of-sunset-by-the-sea-854400.mp4")
 )
@@ -12,7 +11,6 @@
 
 columns = []
 for frame in container.decode(video=0):
-
     print(frame)
     array = frame.to_ndarray(format="rgb24")
 
diff --git a/examples/numpy/generate_video.py b/examples/numpy/generate_video.py
index 80145d514..8b490ea1f 100644
--- a/examples/numpy/generate_video.py
+++ b/examples/numpy/generate_video.py
@@ -2,7 +2,6 @@
 
 import av
 
-
 duration = 4
 fps = 24
 total_frames = duration * fps
@@ -15,7 +14,6 @@
 stream.pix_fmt = "yuv420p"
 
 for frame_i in range(total_frames):
-
     img = np.empty((480, 320, 3))
     img[:, :, 0] = 0.5 + 0.5 * np.sin(2 * np.pi * (0 / 3 + frame_i / total_frames))
     img[:, :, 1] = 0.5 + 0.5 * np.sin(2 * np.pi * (1 / 3 + frame_i / total_frames))
diff --git a/examples/numpy/generate_video_with_pts.py b/examples/numpy/generate_video_with_pts.py
index 58ca547e2..d6cdca80d 100644
--- a/examples/numpy/generate_video_with_pts.py
+++ b/examples/numpy/generate_video_with_pts.py
@@ -1,13 +1,12 @@
 #!/usr/bin/env python3
 
-from fractions import Fraction
 import colorsys
+from fractions import Fraction
 
 import numpy as np
 
 import av
 
-
 (width, height) = (640, 360)
 total_frames = 20
 fps = 30
@@ -43,7 +42,6 @@
 block_h2 = int(0.5 * height / 4)
 
 for frame_i in range(total_frames):
-
     # move around the color wheel (hue)
     nice_color = colorsys.hsv_to_rgb(frame_i / total_frames, 1.0, 1.0)
     nice_color = (np.array(nice_color) * 255).astype(np.uint8)
diff --git a/tests/common.py b/tests/common.py
index 38ee0a0fb..4e5930c08 100644
--- a/tests/common.py
+++ b/tests/common.py
@@ -1,13 +1,12 @@
-from unittest import TestCase as _Base
 import datetime
 import errno
 import functools
 import os
 import types
+from unittest import TestCase as _Base
 
 from av.datasets import fate as fate_suite
 
-
 try:
     import PIL.Image as Image
     import PIL.ImageFilter as ImageFilter
diff --git a/tests/test_audioformat.py b/tests/test_audioformat.py
index 5d4eb7871..5334b37d6 100644
--- a/tests/test_audioformat.py
+++ b/tests/test_audioformat.py
@@ -4,7 +4,6 @@
 
 from .common import TestCase
 
-
 postfix = "le" if sys.byteorder == "little" else "be"
 
 
diff --git a/tests/test_codec.py b/tests/test_codec.py
index b7af5eedf..cbd7a06df 100644
--- a/tests/test_codec.py
+++ b/tests/test_codec.py
@@ -5,7 +5,6 @@
 
 from .common import TestCase
 
-
 # some older ffmpeg versions have no native opus encoder
 try:
     opus_c = Codec("opus", "w")
diff --git a/tests/test_codec_context.py b/tests/test_codec_context.py
index 946f26cc8..95b2b2000 100644
--- a/tests/test_codec_context.py
+++ b/tests/test_codec_context.py
@@ -1,12 +1,12 @@
-from fractions import Fraction
-from unittest import SkipTest
 import os
 import warnings
+from fractions import Fraction
+from unittest import SkipTest
 
+import av
 from av import AudioResampler, Codec, Packet
 from av.codec.codec import UnknownCodecError
 from av.video.frame import PictureType
-import av
 
 from .common import TestCase, fate_suite
 
diff --git a/tests/test_encode.py b/tests/test_encode.py
index a293cbf83..bb1a67a03 100644
--- a/tests/test_encode.py
+++ b/tests/test_encode.py
@@ -1,15 +1,14 @@
+import math
 from fractions import Fraction
 from unittest import SkipTest
-import math
 
+import av
 from av import AudioFrame, VideoFrame
 from av.audio.stream import AudioStream
 from av.video.stream import VideoStream
-import av
 
 from .common import Image, TestCase, fate_suite
 
-
 WIDTH = 320
 HEIGHT = 240
 DURATION = 48
diff --git a/tests/test_enums.py b/tests/test_enums.py
index bc8385f5e..39bf856ad 100644
--- a/tests/test_enums.py
+++ b/tests/test_enums.py
@@ -4,7 +4,6 @@
 
 from .common import TestCase
 
-
 # This must be at the top-level.
 PickleableFooBar = define_enum("PickleableFooBar", __name__, [("FOO", 1)])
 
diff --git a/tests/test_filters.py b/tests/test_filters.py
index f6f727866..88ac36ffc 100644
--- a/tests/test_filters.py
+++ b/tests/test_filters.py
@@ -1,13 +1,13 @@
+import errno
 from fractions import Fraction
 from unittest import SkipTest
-import errno
 
 import numpy as np
 
+import av
 from av import AudioFrame, VideoFrame
 from av.audio.frame import format_dtypes
 from av.filter import Filter, Graph
-import av
 
 from .common import Image, TestCase, fate_suite
 
diff --git a/tests/test_subtitles.py b/tests/test_subtitles.py
index 04e613203..fc0bf9d8e 100644
--- a/tests/test_subtitles.py
+++ b/tests/test_subtitles.py
@@ -1,5 +1,5 @@
-from av.subtitles.subtitle import AssSubtitle, BitmapSubtitle
 import av
+from av.subtitles.subtitle import AssSubtitle, BitmapSubtitle
 
 from .common import TestCase, fate_suite
 
diff --git a/tests/test_timeout.py b/tests/test_timeout.py
index 7463c0b18..cf6e7f0f8 100644
--- a/tests/test_timeout.py
+++ b/tests/test_timeout.py
@@ -1,13 +1,12 @@
-from http.server import BaseHTTPRequestHandler
-from socketserver import TCPServer
 import threading
 import time
+from http.server import BaseHTTPRequestHandler
+from socketserver import TCPServer
 
 import av
 
 from .common import TestCase, fate_suite
 
-
 PORT = 8002
 CONTENT = open(fate_suite("mpeg2/mpeg2_field_encoding.ts"), "rb").read()
 # Needs to be long enough for all host OSes to deal.