diff --git a/lib/hidapi/__init__.py b/lib/hidapi/__init__.py
index 59f1a6fb..e9db82dc 100644
--- a/lib/hidapi/__init__.py
+++ b/lib/hidapi/__init__.py
@@ -17,8 +17,6 @@
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 """Generic Human Interface Device API."""
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from hidapi.udev import close  # noqa: F401
 from hidapi.udev import enumerate  # noqa: F401
 from hidapi.udev import find_paired_node  # noqa: F401
diff --git a/lib/hidapi/hidconsole.py b/lib/hidapi/hidconsole.py
index df01cf27..896aba76 100644
--- a/lib/hidapi/hidconsole.py
+++ b/lib/hidapi/hidconsole.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 import os
 import sys
 import time
diff --git a/lib/hidapi/udev.py b/lib/hidapi/udev.py
index b9ebeb55..41ef144c 100644
--- a/lib/hidapi/udev.py
+++ b/lib/hidapi/udev.py
@@ -24,8 +24,6 @@ The docstrings are mostly copied from the hidapi API header, with changes where
 necessary.
 """
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 import errno as _errno
 import os as _os
 
diff --git a/lib/logitech_receiver/__init__.py b/lib/logitech_receiver/__init__.py
index f03f3460..9625ddb2 100644
--- a/lib/logitech_receiver/__init__.py
+++ b/lib/logitech_receiver/__init__.py
@@ -28,8 +28,6 @@ http://julien.danjou.info/blog/2012/logitech-k750-linux-support
 http://6xq.net/git/lars/lshidpp.git/plain/doc/
 """
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 import logging
 
 from . import listener, status  # noqa: F401
diff --git a/lib/logitech_receiver/base.py b/lib/logitech_receiver/base.py
index 9b7c1577..2065d6e3 100644
--- a/lib/logitech_receiver/base.py
+++ b/lib/logitech_receiver/base.py
@@ -19,8 +19,6 @@
 # Base low-level functions used by the API proper.
 # Unlikely to be used directly unless you're expanding the API.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 import threading as _threading
 
 from collections import namedtuple
diff --git a/lib/logitech_receiver/base_usb.py b/lib/logitech_receiver/base_usb.py
index e45ab52f..c258328a 100644
--- a/lib/logitech_receiver/base_usb.py
+++ b/lib/logitech_receiver/base_usb.py
@@ -26,8 +26,6 @@
 # USB ids of Logitech wireless receivers.
 # Only receivers supporting the HID++ protocol can go in here.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from .descriptors import DEVICES as _DEVICES
 from .i18n import _
 
diff --git a/lib/logitech_receiver/common.py b/lib/logitech_receiver/common.py
index 7362e952..5e495909 100644
--- a/lib/logitech_receiver/common.py
+++ b/lib/logitech_receiver/common.py
@@ -18,8 +18,6 @@
 
 # Some common functions and types.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from binascii import hexlify as _hexlify
 from collections import namedtuple
 from struct import pack, unpack
diff --git a/lib/logitech_receiver/descriptors.py b/lib/logitech_receiver/descriptors.py
index 1dd5ecd2..c44d91d9 100644
--- a/lib/logitech_receiver/descriptors.py
+++ b/lib/logitech_receiver/descriptors.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from collections import namedtuple
 
 from .common import NamedInts as _NamedInts
diff --git a/lib/logitech_receiver/device.py b/lib/logitech_receiver/device.py
index 627701fc..80e7532e 100644
--- a/lib/logitech_receiver/device.py
+++ b/lib/logitech_receiver/device.py
@@ -1,5 +1,3 @@
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 import errno as _errno
 
 from logging import INFO as _INFO
diff --git a/lib/logitech_receiver/hidpp10.py b/lib/logitech_receiver/hidpp10.py
index 4160ccc5..2d2b8c19 100644
--- a/lib/logitech_receiver/hidpp10.py
+++ b/lib/logitech_receiver/hidpp10.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from logging import getLogger  # , DEBUG as _DEBUG
 
 from .common import BATTERY_APPROX as _BATTERY_APPROX
diff --git a/lib/logitech_receiver/hidpp20.py b/lib/logitech_receiver/hidpp20.py
index ac2ec6c8..682c72b8 100644
--- a/lib/logitech_receiver/hidpp20.py
+++ b/lib/logitech_receiver/hidpp20.py
@@ -18,8 +18,6 @@
 
 # Logitech Unifying Receiver API.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from logging import DEBUG as _DEBUG
 from logging import ERROR as _ERROR
 from logging import INFO as _INFO
diff --git a/lib/logitech_receiver/i18n.py b/lib/logitech_receiver/i18n.py
index ff6382eb..7f14f086 100644
--- a/lib/logitech_receiver/i18n.py
+++ b/lib/logitech_receiver/i18n.py
@@ -18,8 +18,6 @@
 
 # Translation support for the Logitech receivers library
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 import gettext as _gettext
 
 try:
diff --git a/lib/logitech_receiver/listener.py b/lib/logitech_receiver/listener.py
index 0176b4a8..41db1a1d 100644
--- a/lib/logitech_receiver/listener.py
+++ b/lib/logitech_receiver/listener.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 import threading as _threading
 
 from logging import DEBUG as _DEBUG
diff --git a/lib/logitech_receiver/notifications.py b/lib/logitech_receiver/notifications.py
index 26ffa89d..03fbb1dd 100644
--- a/lib/logitech_receiver/notifications.py
+++ b/lib/logitech_receiver/notifications.py
@@ -19,8 +19,6 @@
 # Handles incoming events from the receiver/devices, updating the related
 # status object as appropriate.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from logging import DEBUG as _DEBUG
 from logging import INFO as _INFO
 from logging import getLogger
diff --git a/lib/logitech_receiver/receiver.py b/lib/logitech_receiver/receiver.py
index e8db265f..28dcabaf 100644
--- a/lib/logitech_receiver/receiver.py
+++ b/lib/logitech_receiver/receiver.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 import errno as _errno
 
 from logging import INFO as _INFO
diff --git a/lib/logitech_receiver/settings.py b/lib/logitech_receiver/settings.py
index ab296cb5..2953d340 100644
--- a/lib/logitech_receiver/settings.py
+++ b/lib/logitech_receiver/settings.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 import math
 
 from copy import copy as _copy
diff --git a/lib/logitech_receiver/settings_templates.py b/lib/logitech_receiver/settings_templates.py
index c517d373..c09ff55e 100644
--- a/lib/logitech_receiver/settings_templates.py
+++ b/lib/logitech_receiver/settings_templates.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from collections import namedtuple
 from logging import DEBUG as _DEBUG
 from logging import INFO as _INFO
diff --git a/lib/logitech_receiver/special_keys.py b/lib/logitech_receiver/special_keys.py
index 6d9690ad..b4752647 100644
--- a/lib/logitech_receiver/special_keys.py
+++ b/lib/logitech_receiver/special_keys.py
@@ -19,8 +19,6 @@
 # Reprogrammable keys information
 # Mostly from Logitech documentation, but with some edits for better Lunix compatability
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from .common import NamedInts as _NamedInts
 
 # <controls.xml awk -F\" '/<Control /{sub(/^LD_FINFO_(CTRLID_)?/, "", $2);printf("\t%s=0x%04X,\n", $2, $4)}' | sort -t= -k2
diff --git a/lib/logitech_receiver/status.py b/lib/logitech_receiver/status.py
index e9abb476..7b8a2786 100644
--- a/lib/logitech_receiver/status.py
+++ b/lib/logitech_receiver/status.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from logging import DEBUG as _DEBUG
 from logging import INFO as _INFO
 from logging import getLogger
diff --git a/lib/solaar/__init__.py b/lib/solaar/__init__.py
index e6563283..a2a4576b 100644
--- a/lib/solaar/__init__.py
+++ b/lib/solaar/__init__.py
@@ -16,7 +16,5 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 __version__ = '1.0.7'
 NAME = 'Solaar'
diff --git a/lib/solaar/cli/__init__.py b/lib/solaar/cli/__init__.py
index 0adc03cf..2ceceb8b 100644
--- a/lib/solaar/cli/__init__.py
+++ b/lib/solaar/cli/__init__.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 import argparse as _argparse
 import sys as _sys
 
diff --git a/lib/solaar/cli/config.py b/lib/solaar/cli/config.py
index 9ffc8e25..55d6eb2c 100644
--- a/lib/solaar/cli/config.py
+++ b/lib/solaar/cli/config.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from logitech_receiver import settings as _settings
 from logitech_receiver import settings_templates as _settings_templates
 from solaar import configuration as _configuration
diff --git a/lib/solaar/cli/pair.py b/lib/solaar/cli/pair.py
index f91e0f58..2c632c48 100644
--- a/lib/solaar/cli/pair.py
+++ b/lib/solaar/cli/pair.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from time import time as _timestamp
 
 from logitech_receiver import base as _base
diff --git a/lib/solaar/cli/probe.py b/lib/solaar/cli/probe.py
index c78026e3..3e3e2b62 100644
--- a/lib/solaar/cli/probe.py
+++ b/lib/solaar/cli/probe.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from logitech_receiver import base as _base
 from logitech_receiver import hidpp10 as _hidpp10
 from logitech_receiver.common import strhex as _strhex
diff --git a/lib/solaar/cli/show.py b/lib/solaar/cli/show.py
index 58d1067f..61f65dc2 100644
--- a/lib/solaar/cli/show.py
+++ b/lib/solaar/cli/show.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from logitech_receiver import hidpp10 as _hidpp10
 from logitech_receiver import hidpp20 as _hidpp20
 from logitech_receiver import receiver as _receiver
diff --git a/lib/solaar/cli/unpair.py b/lib/solaar/cli/unpair.py
index 15591702..f4ca2b61 100644
--- a/lib/solaar/cli/unpair.py
+++ b/lib/solaar/cli/unpair.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 
 def run(receivers, args, find_receiver, find_device):
     assert receivers
diff --git a/lib/solaar/gtk.py b/lib/solaar/gtk.py
index 1dee5ba3..10644fbf 100755
--- a/lib/solaar/gtk.py
+++ b/lib/solaar/gtk.py
@@ -18,8 +18,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 import importlib
 import os.path
 
diff --git a/lib/solaar/i18n.py b/lib/solaar/i18n.py
index 93afe402..c6e9b910 100644
--- a/lib/solaar/i18n.py
+++ b/lib/solaar/i18n.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 import gettext as _gettext
 import locale
 
diff --git a/lib/solaar/listener.py b/lib/solaar/listener.py
index 4787bc2d..28f86975 100644
--- a/lib/solaar/listener.py
+++ b/lib/solaar/listener.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 import time
 
 from collections import namedtuple
diff --git a/lib/solaar/tasks.py b/lib/solaar/tasks.py
index 8985a097..2c91c265 100644
--- a/lib/solaar/tasks.py
+++ b/lib/solaar/tasks.py
@@ -18,8 +18,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from logging import DEBUG as _DEBUG
 from logging import getLogger
 from threading import Thread as _Thread
diff --git a/lib/solaar/ui/__init__.py b/lib/solaar/ui/__init__.py
index bc402d86..23b0d840 100644
--- a/lib/solaar/ui/__init__.py
+++ b/lib/solaar/ui/__init__.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from logging import DEBUG as _DEBUG
 from logging import getLogger
 
diff --git a/lib/solaar/ui/about.py b/lib/solaar/ui/about.py
index 0fb512e7..564fb382 100644
--- a/lib/solaar/ui/about.py
+++ b/lib/solaar/ui/about.py
@@ -17,8 +17,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from gi.repository import Gtk
 from solaar import NAME, __version__
 from solaar.i18n import _
diff --git a/lib/solaar/ui/action.py b/lib/solaar/ui/action.py
index 376632b7..91621f23 100644
--- a/lib/solaar/ui/action.py
+++ b/lib/solaar/ui/action.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from gi.repository import Gdk, Gtk
 from solaar.i18n import _
 
diff --git a/lib/solaar/ui/config_panel.py b/lib/solaar/ui/config_panel.py
index 8111495a..f3ef9cad 100644
--- a/lib/solaar/ui/config_panel.py
+++ b/lib/solaar/ui/config_panel.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from threading import Timer as _Timer
 
 from gi.repository import Gdk, GLib, Gtk
diff --git a/lib/solaar/ui/diversion_rules.py b/lib/solaar/ui/diversion_rules.py
index 97ac32d7..a4e2f09a 100644
--- a/lib/solaar/ui/diversion_rules.py
+++ b/lib/solaar/ui/diversion_rules.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from collections import defaultdict
 from contextlib import contextmanager as contextlib_contextmanager
 from logging import getLogger
diff --git a/lib/solaar/ui/icons.py b/lib/solaar/ui/icons.py
index 21f135d5..551303b1 100644
--- a/lib/solaar/ui/icons.py
+++ b/lib/solaar/ui/icons.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from logging import DEBUG as _DEBUG
 from logging import getLogger
 
diff --git a/lib/solaar/ui/notify.py b/lib/solaar/ui/notify.py
index c28cea50..6d4bfcf7 100644
--- a/lib/solaar/ui/notify.py
+++ b/lib/solaar/ui/notify.py
@@ -18,8 +18,6 @@
 
 # Optional desktop notifications.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from solaar.i18n import _
 
 #
diff --git a/lib/solaar/ui/pair_window.py b/lib/solaar/ui/pair_window.py
index a1efdf64..a5994948 100644
--- a/lib/solaar/ui/pair_window.py
+++ b/lib/solaar/ui/pair_window.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from logging import DEBUG as _DEBUG
 from logging import getLogger
 
diff --git a/lib/solaar/ui/tray.py b/lib/solaar/ui/tray.py
index ca608f4d..fec3b0da 100644
--- a/lib/solaar/ui/tray.py
+++ b/lib/solaar/ui/tray.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 import os
 
 from logging import DEBUG as _DEBUG
diff --git a/lib/solaar/ui/window.py b/lib/solaar/ui/window.py
index e30e332e..ef6cb76d 100644
--- a/lib/solaar/ui/window.py
+++ b/lib/solaar/ui/window.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from logging import DEBUG as _DEBUG
 from logging import getLogger
 
diff --git a/lib/solaar/upower.py b/lib/solaar/upower.py
index d020d161..cf271333 100644
--- a/lib/solaar/upower.py
+++ b/lib/solaar/upower.py
@@ -16,8 +16,6 @@
 ## with this program; if not, write to the Free Software Foundation, Inc.,
 ## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-from __future__ import absolute_import, division, print_function, unicode_literals
-
 from logging import INFO as _INFO
 from logging import getLogger
 
diff --git a/tools/monitor.py b/tools/monitor.py
index 741385c4..9ec8c623 100644
--- a/tools/monitor.py
+++ b/tools/monitor.py
@@ -1,7 +1,6 @@
 #
 #
 #
-from __future__ import absolute_import, division, print_function, unicode_literals
 
 import sys