diff --git a/beets/autotag/hooks.py b/beets/autotag/hooks.py
index 5c8e0e2c5..8f0a98104 100644
--- a/beets/autotag/hooks.py
+++ b/beets/autotag/hooks.py
@@ -349,7 +349,7 @@ class Distance(object):
         # Convert distance into a negative float we can sort items in
         # ascending order (for keys, when the penalty is equal) and
         # still get the items with the biggest distance first.
-        return sorted(list_, key=lambda (key, dist): (0 - dist, key))
+        return sorted(list_, key=lambda key_dist: (0 - key_dist[1], key_dist[0]))
 
     # Behave like a float.
 
diff --git a/beets/library.py b/beets/library.py
index ed1938671..bb6873d2d 100644
--- a/beets/library.py
+++ b/beets/library.py
@@ -559,7 +559,7 @@ class Item(LibModel):
 
         for key in self._media_fields:
             value = getattr(mediafile, key)
-            if isinstance(value, (int, long)):
+            if isinstance(value, (int, int)):
                 if value.bit_length() > 63:
                     value = 0
             self[key] = value
diff --git a/beets/ui/commands.py b/beets/ui/commands.py
index a2669e688..2d9f3cdb1 100644
--- a/beets/ui/commands.py
+++ b/beets/ui/commands.py
@@ -280,7 +280,7 @@ def show_change(cur_artist, cur_album, match):
 
     # Tracks.
     pairs = match.mapping.items()
-    pairs.sort(key=lambda (_, track_info): track_info.index)
+    pairs.sort(key=lambda __track_info: __track_info[1].index)
 
     # Build up LHS and RHS for track difference display. The `lines` list
     # contains ``(lhs, rhs, width)`` tuples where `width` is the length (in
@@ -442,7 +442,7 @@ def summarize_items(items, singleton):
     else:
         # Enumerate all the formats by decreasing frequencies:
         for fmt, count in sorted(format_counts.items(),
-                                 key=lambda (f, c): (-c, f)):
+                                 key=lambda f_c: (-f_c[1], f_c[0])):
             summary_parts.append('{0} {1}'.format(fmt, count))
 
     if items:
diff --git a/beets/util/confit.py b/beets/util/confit.py
index ac1cb7023..6d35667bc 100644
--- a/beets/util/confit.py
+++ b/beets/util/confit.py
@@ -49,7 +49,7 @@ REDACTED_TOMBSTONE = 'REDACTED'
 PY3 = sys.version_info[0] == 3
 STRING = str if PY3 else unicode
 BASESTRING = str if PY3 else basestring
-NUMERIC_TYPES = (int, float) if PY3 else (int, float, long)
+NUMERIC_TYPES = (int, float) if PY3 else (int, float, int)
 
 
 def iter_first(sequence):
diff --git a/beets/util/functemplate.py b/beets/util/functemplate.py
index b4097baba..16d21cd58 100644
--- a/beets/util/functemplate.py
+++ b/beets/util/functemplate.py
@@ -72,7 +72,7 @@ def ex_literal(val):
     """
     if val is None:
         return ast.Name(b'None', ast.Load())
-    elif isinstance(val, (int, float, long)):
+    elif isinstance(val, (int, float, int)):
         return ast.Num(val)
     elif isinstance(val, bool):
         return ast.Name(bytes(val), ast.Load())
diff --git a/extra/release.py b/extra/release.py
index 7bbc080c4..cf368c8f3 100755
--- a/extra/release.py
+++ b/extra/release.py
@@ -3,6 +3,8 @@
 
 """A utility script for automating the beets release process.
 """
+from __future__ import absolute_import
+from __future__ import print_function
 import click
 import os
 import re
@@ -110,7 +112,7 @@ def bump_version(version):
                     out_lines.append(line)
 
             if not found:
-                print("No pattern found in {}".format(filename))
+                print(("No pattern found in {}".format(filename)))
 
         # Write the file back.
         with open(filename, 'w') as f:
@@ -212,7 +214,7 @@ def changelog_as_markdown():
 def changelog():
     """Get the most recent version's changelog as Markdown.
     """
-    print(changelog_as_markdown())
+    print((changelog_as_markdown()))
 
 
 def get_version(index=0):
@@ -233,7 +235,7 @@ def get_version(index=0):
 def version():
     """Display the current version.
     """
-    print(get_version())
+    print((get_version()))
 
 
 @release.command()
diff --git a/test/test_thumbnails.py b/test/test_thumbnails.py
index 30c5bb234..24a1bc92d 100644
--- a/test/test_thumbnails.py
+++ b/test/test_thumbnails.py
@@ -114,7 +114,7 @@ class ThumbnailsTest(unittest.TestCase, TestHelper):
         self.assertEqual(ThumbnailsPlugin().get_uri, giouri_inst.uri)
 
         giouri_inst.available = False
-        self.assertEqual(ThumbnailsPlugin().get_uri.im_class, PathlibURI)
+        self.assertEqual(ThumbnailsPlugin().get_uri.__self__.__class__, PathlibURI)
 
     @patch('beetsplug.thumbnails.ThumbnailsPlugin._check_local_ok')
     @patch('beetsplug.thumbnails.ArtResizer')