diff --git a/sigal/plugins/extended_caching.py b/sigal/plugins/extended_caching.py
index 7d47d67..d8f225d 100644
--- a/sigal/plugins/extended_caching.py
+++ b/sigal/plugins/extended_caching.py
@@ -20,22 +20,25 @@
 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 # IN THE SOFTWARE.
 
-""" Decreases the time needed to build large galleries (e.g.: 25k images in 2.5s instead of 30s)
+""" Decreases the time needed to build large galleries (e.g.: 25k images in
+2.5s instead of 30s)
+
+This plugin allows extended caching, which is useful for large galleries. Once
+a gallery has been built it caches the exif-data of the contained images in the
+gallery target folder.  Before the next run it restores them so that the image
+does not have to be parsed again. For large galleries this can speed up the
+creation of index files dramatically.
 
-    This plugin allows extended caching, which is useful for large galleries. Once a gallery has
-    been built it caches the exif-data of the contained images in the gallery target folder.
-    Before the next run it restores them so that the image does not have to be parsed again. For
-    large galleries this can speed up the creation of index files dramatically.
 """
 
 import pickle
-import io
 import logging
 import os
 from sigal import signals
 
 logger = logging.getLogger(__name__)
 
+
 def load_exif(album):
     """Loads the exif data of all images in an album from cache"""
     if not hasattr(album.gallery, "exifCache"):
@@ -48,6 +51,7 @@ def load_exif(album):
             if key in cache:
                 media.exif = cache[key]
 
+
 def _restore_cache(gallery):
     """Restores the exif data cache from the cache file"""
     cachePath = os.path.join(gallery.settings["destination"], ".exif_cache")
@@ -62,6 +66,7 @@ def _restore_cache(gallery):
         logger.warn("Could not load cache: %s", e)
         gallery.exifCache = {}
 
+
 def save_cache(gallery):
     """Stores the exif data of all images in the gallery"""
 
@@ -92,4 +97,4 @@ def save_cache(gallery):
 
 def register(settings):
     signals.gallery_build.connect(save_cache)
-    signals.album_initialized.connect(load_exif)
\ No newline at end of file
+    signals.album_initialized.connect(load_exif)
diff --git a/sigal/plugins/nomedia.py b/sigal/plugins/nomedia.py
index 020fd16..e3774b9 100644
--- a/sigal/plugins/nomedia.py
+++ b/sigal/plugins/nomedia.py
@@ -55,6 +55,7 @@ from sigal import signals
 
 logger = logging.getLogger(__name__)
 
+
 def _remove_albums_with_subdirs(albums, keysToRemove, prefix=""):
     for keyToRemove in keysToRemove:
         for key in list(albums.keys()):
@@ -103,11 +104,11 @@ def filter_nomedia(album, settings=None):
                 ignoredEntries = nomediaFile.read().split("\n")
 
                 album.medias = list(filter(lambda media: media.filename not in ignoredEntries,
-                                            album.medias))
+                                           album.medias))
                 album.subdirs = list(filter(lambda dirName: dirName not in ignoredEntries,
                                             album.subdirs))
 
-                #subdirs have been added to the gallery already, remove them there, too
+                # subdirs have been added to the gallery already, remove them there, too
                 _remove_albums_with_subdirs(album.gallery.albums, ignoredEntries, album.path + os.path.sep)
 
 
diff --git a/tests/test_extended_caching.py b/tests/test_extended_caching.py
index d7cecc4..f24a1f5 100644
--- a/tests/test_extended_caching.py
+++ b/tests/test_extended_caching.py
@@ -1,15 +1,14 @@
 # -*- coding:utf-8 -*-
 
-import datetime
 import os
 import pickle
-import pytest
 
 from sigal.gallery import Gallery
 from sigal.plugins import extended_caching
 
 CURRENT_DIR = os.path.dirname(__file__)
 
+
 def test_save_cache(settings):
     gal = Gallery(settings, ncpu=1)
     extended_caching.save_cache(gal)
@@ -25,21 +24,20 @@ def test_save_cache(settings):
     assert cache["exifTest/22.jpg"] == gal.albums["exifTest"].medias[1].exif
     assert cache["exifTest/noexif.png"] == gal.albums["exifTest"].medias[2].exif
 
-def test__restore_cache(settings):
+
+def test_restore_cache(settings):
     gal1 = Gallery(settings, ncpu=1)
     gal2 = Gallery(settings, ncpu=1)
     extended_caching.save_cache(gal1)
-
-    cachePath = os.path.join(settings['destination'], ".exif_cache")
     extended_caching._restore_cache(gal2)
-
     assert gal1.exifCache == gal2.exifCache
 
+
 def test_load_exif(settings):
     gal1 = Gallery(settings, ncpu=1)
     gal1.albums["exifTest"].medias[2].exif = "blafoo"
     gal1.exifCache = {"exifTest/21.jpg": "Foo",
-                     "exifTest/22.jpg": "Bar"}
+                      "exifTest/22.jpg": "Bar"}
 
     extended_caching.load_exif(gal1.albums["exifTest"])
 
@@ -47,7 +45,7 @@ def test_load_exif(settings):
     assert gal1.albums["exifTest"].medias[1].exif == "Bar"
     assert gal1.albums["exifTest"].medias[2].exif == "blafoo"
 
-    #check if setting gallery.exifCache works
+    # check if setting gallery.exifCache works
     gal2 = Gallery(settings, ncpu=1)
     extended_caching.save_cache(gal1)
     extended_caching.load_exif(gal2.albums["exifTest"])