diff --git a/src/allmydata/frontends/magic_folder.py b/src/allmydata/frontends/magic_folder.py
index 3e8a85042..c34087390 100644
--- a/src/allmydata/frontends/magic_folder.py
+++ b/src/allmydata/frontends/magic_folder.py
@@ -4,7 +4,7 @@ import os.path
 from collections import deque
 import time
 
-from twisted.internet import defer, reactor, task, error
+from twisted.internet import defer, reactor, task
 from twisted.python.failure import Failure
 from twisted.python import runtime
 from twisted.application import service
diff --git a/src/allmydata/scripts/magic_folder_cli.py b/src/allmydata/scripts/magic_folder_cli.py
index 1db2b0325..af81ce0d1 100644
--- a/src/allmydata/scripts/magic_folder_cli.py
+++ b/src/allmydata/scripts/magic_folder_cli.py
@@ -243,7 +243,7 @@ def _get_json_for_fragment(options, fragment, method='GET', post_args=None):
     data = resp.read()
     try:
         parsed = simplejson.loads(data)
-    except Exception as e:
+    except Exception:
         print "Failed to parse reply:\n%s" % (data,)
         return []
     if parsed is None:
diff --git a/src/allmydata/test/check_magicfolder_smoke.py b/src/allmydata/test/check_magicfolder_smoke.py
index 0bc338fa7..8e5fda6ed 100644
--- a/src/allmydata/test/check_magicfolder_smoke.py
+++ b/src/allmydata/test/check_magicfolder_smoke.py
@@ -36,7 +36,7 @@ import sys
 import time
 import shutil
 import subprocess
-from os.path import join, abspath, curdir, exists, split
+from os.path import join, abspath, curdir, exists
 from os import mkdir, listdir, unlink
 
 is_windows = (sys.platform == 'win32')
diff --git a/src/allmydata/test/test_magic_folder.py b/src/allmydata/test/test_magic_folder.py
index 39c707227..ee4a25e55 100644
--- a/src/allmydata/test/test_magic_folder.py
+++ b/src/allmydata/test/test_magic_folder.py
@@ -471,7 +471,7 @@ class MagicFolderAliceBobTestMixin(MagicFolderCLITestMixin, ShouldFailMixin, Rea
     @defer.inlineCallbacks
     def test_download_retry(self):
         alice_fname = os.path.join(self.alice_magic_dir, 'blam')
-        bob_fname = os.path.join(self.bob_magic_dir, 'blam')
+        # bob_fname = os.path.join(self.bob_magic_dir, 'blam')
 
         # Alice creates a file
         fileutil.write(alice_fname, ''.join(['contents-%04d\n' % i for i in range(1024)]))
@@ -955,7 +955,7 @@ class SingleMagicFolderTestMixin(MagicFolderCLITestMixin, ShouldFailMixin, Reall
     """
 
     def setUp(self):
-        x = super(SingleMagicFolderTestMixin, self).setUp()
+        super(SingleMagicFolderTestMixin, self).setUp()
         temp = self.mktemp()
         self.basedir = abspath_expanduser_unicode(temp.decode(get_filesystem_encoding()))
         self.magicfolder = None
diff --git a/src/allmydata/util/fileutil.py b/src/allmydata/util/fileutil.py
index 1b8db03e4..a998a337f 100644
--- a/src/allmydata/util/fileutil.py
+++ b/src/allmydata/util/fileutil.py
@@ -170,32 +170,6 @@ def is_ancestor_path(parent, dirname):
             return False
     return True
 
-def make_dirs_with_absolute_mode(parent, dirname, mode):
-    """
-    Make directory `dirname` and chmod it to `mode` afterwards.
-    We chmod all parent directories of `dirname` until we reach
-    `parent`.
-    """
-    precondition_abspath(parent)
-    precondition_abspath(dirname)
-    if not is_ancestor_path(parent, dirname):
-        raise AssertionError("dirname must be a descendant of parent")
-
-    make_dirs(dirname)
-    while dirname != parent:
-        os.chmod(dirname, mode)
-        # FIXME: doesn't seem to work on Windows for long paths
-        old_dirname, dirname = dirname, os.path.dirname(dirname)
-        _assert(len(dirname) < len(old_dirname), dirname=dirname, old_dirname=old_dirname)
-
-def is_ancestor_path(parent, dirname):
-    while dirname != parent:
-        # FIXME: doesn't seem to work on Windows for long paths
-        old_dirname, dirname = dirname, os.path.dirname(dirname)
-        if len(dirname) >= len(old_dirname):
-            return False
-    return True
-
 def make_dirs(dirname, mode=0777):
     """
     An idempotent version of os.makedirs().  If the dir already exists, do
diff --git a/src/allmydata/web/magic_folder.py b/src/allmydata/web/magic_folder.py
index 8e02ac0bf..40a88f6d0 100644
--- a/src/allmydata/web/magic_folder.py
+++ b/src/allmydata/web/magic_folder.py
@@ -1,11 +1,6 @@
 import simplejson
 
-from twisted.web.server import UnsupportedMethod
-
-from nevow import rend
-from nevow.inevow import IRequest
-
-from allmydata.web.common import WebError, TokenOnlyWebApi
+from allmydata.web.common import TokenOnlyWebApi
 
 
 class MagicFolderWebApi(TokenOnlyWebApi):
diff --git a/src/allmydata/windows/inotify.py b/src/allmydata/windows/inotify.py
index a32333a7e..7c57a8983 100644
--- a/src/allmydata/windows/inotify.py
+++ b/src/allmydata/windows/inotify.py
@@ -225,7 +225,7 @@ class INotify(PollMixin):
     def wait_until_stopped(self):
         try:
             fileutil.write(os.path.join(self._path.path, u".ignore-me"), "")
-        except IOError as e:
+        except IOError:
             pass
         return self.poll(lambda: self._state == STOPPED)