diff --git a/sigal/__init__.py b/sigal/__init__.py
index 0ef79fe..acad34a 100644
--- a/sigal/__init__.py
+++ b/sigal/__init__.py
@@ -174,7 +174,7 @@ def build(source, destination, debug, verbose, quiet, force, config, theme,
 
     if not quiet:
         stats_str = ''
-        types = sorted(set(t.rsplit('_',1)[0] for t in stats))
+        types = sorted(set(t.rsplit('_', 1)[0] for t in stats))
         for t in types[:-1]:
             stats_str += '{} and '.format(format_stats(t))
         stats_str += '{}'.format(format_stats(types[-1]))
diff --git a/sigal/image.py b/sigal/image.py
index 3e05334..55af92a 100644
--- a/sigal/image.py
+++ b/sigal/image.py
@@ -46,7 +46,7 @@ from pilkit.processors import Transpose
 from pilkit.utils import save_image
 
 from . import signals, utils
-from .settings import Status, get_thumb
+from .settings import Status
 
 try:
     # Pillow 7.2+
diff --git a/sigal/plugins/encrypt/__init__.py b/sigal/plugins/encrypt/__init__.py
index e530ef9..cb8cd07 100644
--- a/sigal/plugins/encrypt/__init__.py
+++ b/sigal/plugins/encrypt/__init__.py
@@ -39,4 +39,4 @@ Compatibility with other plugins:
 
 """
 
-from .encrypt import register
+from .encrypt import register  # noqa
diff --git a/sigal/plugins/encrypt/endec.py b/sigal/plugins/encrypt/endec.py
index 086fda1..c199b36 100644
--- a/sigal/plugins/encrypt/endec.py
+++ b/sigal/plugins/encrypt/endec.py
@@ -35,6 +35,7 @@ from cryptography.hazmat.primitives.kdf.pbkdf2 import PBKDF2HMAC
 backend = default_backend()
 MAGIC_STRING = b"_e_n_c_r_y_p_t_e_d_"
 
+
 def kdf_gen_key(password: str, salt: str, iters: int) -> bytes:
     password = password.encode("utf-8")
     salt = salt.encode("utf-8")
@@ -48,6 +49,7 @@ def kdf_gen_key(password: str, salt: str, iters: int) -> bytes:
     key = kdf.derive(password)
     return key
 
+
 def dispatchargs(decorated):
     def wrapper(args):
         if args.key is not None:
@@ -65,8 +67,9 @@ def dispatchargs(decorated):
 
     return wrapper
 
+
 def encrypt(key: bytes, infile: BinaryIO, outfile: BinaryIO, tag: bytes):
-    if len(key) != 128/8:
+    if len(key) != 128 / 8:
         raise ValueError("Unsupported key length: %d" % len(key))
     aesgcm = AESGCM(key)
     iv = os.urandom(12)
@@ -78,8 +81,9 @@ def encrypt(key: bytes, infile: BinaryIO, outfile: BinaryIO, tag: bytes):
     ciphertext.write(iv)
     ciphertext.write(encrypted)
 
+
 def decrypt(key: bytes, infile: BinaryIO, outfile: BinaryIO, tag: bytes):
-    if len(key) != 128/8:
+    if len(key) != 128 / 8:
         raise ValueError("Unsupported key length: %d" % len(key))
     aesgcm = AESGCM(key)
     ciphertext = infile
@@ -95,6 +99,7 @@ def decrypt(key: bytes, infile: BinaryIO, outfile: BinaryIO, tag: bytes):
         raise ValueError("Incorrect tag, iv, or corrupted ciphertext")
     plaintext.write(decrypted)
 
+
 if __name__ == "__main__":
     import argparse as ap
     parser = ap.ArgumentParser(description="Encrypt or decrypt using AES-128-GCM")
diff --git a/sigal/plugins/feeds.py b/sigal/plugins/feeds.py
index ec18fae..4ed6b0d 100644
--- a/sigal/plugins/feeds.py
+++ b/sigal/plugins/feeds.py
@@ -70,7 +70,7 @@ def generate_feed(gallery, medias, feed_type=None, feed_url='', nb_items=0):
             #                             item.date.date(),
             #                             urlparse(link).path.lstrip('/')),
             description='<img src="{}/{}/{}" />'.format(base_url, item.path,
-                                                    item.thumbnail),
+                                                        item.thumbnail),
             # categories=item.tags if hasattr(item, 'tags') else None,
             author_name=getattr(item, 'author', ''),
             pubdate=item.date or datetime.now(),
diff --git a/sigal/plugins/nomedia.py b/sigal/plugins/nomedia.py
index a7d3ac6..5017c0a 100644
--- a/sigal/plugins/nomedia.py
+++ b/sigal/plugins/nomedia.py
@@ -94,7 +94,7 @@ def filter_nomedia(album, settings=None):
             _remove_albums_with_subdirs(album.gallery.albums, [album.path])
             try:
                 os.rmdir(album.dst_path)
-            except OSError as e:
+            except OSError:
                 # directory was created and populated with images in a
                 # previous run => keep it
                 pass
diff --git a/sigal/plugins/zip_gallery.py b/sigal/plugins/zip_gallery.py
index 2695db6..e6c9d0f 100644
--- a/sigal/plugins/zip_gallery.py
+++ b/sigal/plugins/zip_gallery.py
@@ -34,7 +34,7 @@ See :ref:`compatibility with the encrypt plugin <compatibility-with-encrypt>`.
 import logging
 import os
 import zipfile
-from os.path import isfile, join, splitext
+from os.path import isfile, join
 
 from sigal import signals
 from sigal.gallery import Album
@@ -42,11 +42,13 @@ from sigal.utils import cached_property
 
 logger = logging.getLogger(__name__)
 
+
 def _should_generate_album_zip(album):
     """Checks whether a `.nozip_gallery` file exists in the album folder"""
     nozipgallerypath = os.path.join(album.src_path, ".nozip_gallery")
     return not os.path.isfile(nozipgallerypath)
 
+
 def _generate_album_zip(album):
     """Make a ZIP archive with all media files and return its path.
 
@@ -81,6 +83,7 @@ def _generate_album_zip(album):
 
     return False
 
+
 def generate_album_zip(album):
     """Checks for .nozip_gallery file in album folder.
     If this file exists, no ZIP archive is generated.
@@ -98,9 +101,11 @@ def generate_album_zip(album):
 
     return _generate_album_zip(album)
 
+
 def nozip_gallery_file(album, settings=None):
     """Filesystem based switch to disable ZIP generation for an Album"""
     Album.zip = cached_property(generate_album_zip)
 
+
 def register(settings):
     signals.album_initialized.connect(nozip_gallery_file)
diff --git a/sigal/video.py b/sigal/video.py
index ce5f007..071ed6a 100644
--- a/sigal/video.py
+++ b/sigal/video.py
@@ -28,7 +28,7 @@ import subprocess
 from os.path import splitext
 
 from . import image, utils
-from .settings import Status, get_thumb
+from .settings import Status
 from .utils import is_valid_html5_video
 
 
@@ -77,6 +77,7 @@ def video_size(source, converter='ffmpeg'):
         x, y = y, x
     return x, y
 
+
 def get_resize_options(source, converter, output_size):
     """Figure out resize options for video from src and dst sizes.
 
@@ -152,10 +153,10 @@ def generate_video(source, outname, settings):
     base, dst_ext = splitext(outname)
 
     if dst_ext == src_ext and not resize_opt and not video_always_convert:
-        logger.debug('For %s, the source and destination extension are the " \
-                        "same, there is no resizing to be done, and " \
-                        "video_always_convert is False, so the output is " \
-                        " being copied', outname)
+        logger.debug('For %s, the source and destination extension are the '
+                     'same, there is no resizing to be done, and '
+                     'video_always_convert is False, so the output is '
+                     ' being copied', outname)
         shutil.copy(source, outname)
         return
 
@@ -163,7 +164,7 @@ def generate_video(source, outname, settings):
     if second_pass_options:
         generate_video_pass(converter, source, final_pass_options)
         final_second_pass_options = _get_empty_if_none_else_variable(
-                    second_pass_options) + resize_opt
+            second_pass_options) + resize_opt
         generate_video_pass(converter, source,
                             final_second_pass_options, outname)
     else:
diff --git a/tests/test_encrypt.py b/tests/test_encrypt.py
index 8a53e7b..049f87b 100644
--- a/tests/test_encrypt.py
+++ b/tests/test_encrypt.py
@@ -20,6 +20,7 @@ def get_key_tag(settings):
     tag = options["gcm_tag"].encode("utf-8")
     return (key, tag)
 
+
 def test_encrypt(settings, tmpdir, disconnect_signals):
     settings['destination'] = str(tmpdir)
     if "sigal.plugins.encrypt" not in settings["plugins"]:
@@ -63,7 +64,7 @@ def test_encrypt(settings, tmpdir, disconnect_signals):
         ]
         if settings["keep_orig"]:
             encryptedImages.append(os.path.join(settings["destination"],
-                                    media.path, media.big))
+                                                media.path, media.big))
 
         # check if images are encrypted by trying to decrypt
         for image in encryptedImages:
@@ -79,6 +80,6 @@ def test_encrypt(settings, tmpdir, disconnect_signals):
 
     # check keycheck file
     with open(os.path.join(settings["destination"],
-                            'static', "keycheck.txt"), "rb") as infile:
+                           'static', "keycheck.txt"), "rb") as infile:
         with BytesIO() as outfile:
             endec.decrypt(key, infile, outfile, tag)
diff --git a/tests/test_video.py b/tests/test_video.py
index 85c8af9..55a39be 100644
--- a/tests/test_video.py
+++ b/tests/test_video.py
@@ -5,7 +5,7 @@ import pytest
 from sigal.gallery import Video
 from sigal.settings import Status, create_settings
 from sigal.video import (generate_thumbnail, generate_video, process_video,
-                         video_size, get_resize_options, generate_video_pass)
+                         video_size)
 from unittest.mock import patch
 
 CURRENT_DIR = os.path.dirname(__file__)
diff --git a/tests/test_zip.py b/tests/test_zip.py
index c409388..6909de9 100644
--- a/tests/test_zip.py
+++ b/tests/test_zip.py
@@ -1,4 +1,3 @@
-import glob
 import os
 import zipfile