diff --git a/bin/make_doc.py b/bin/make_doc.py
index ec44fb9..5630775 100755
--- a/bin/make_doc.py
+++ b/bin/make_doc.py
@@ -21,10 +21,12 @@
 #
 # *****************************************************************************
 
+from __future__ import division, print_function
+
 import os
 from os import path
+
 import markdown
-import codecs
 
 BASE_PATH = path.abspath(path.join(path.dirname(__file__), '..'))
 DOC_SRC = path.join(BASE_PATH, 'doc')
@@ -55,7 +57,7 @@ for dirpath, dirnames, filenames in os.walk(DOC_SRC):
         # treat .md files special
         final_sub_name = path.splitext(sub_name)[0] + '.html'
         final_name = path.join(DOC_DST, final_sub_name)
-        print "Converting", sub_name, "to", final_sub_name
+        print("Converting %s to %s" %(sub_name, final_sub_name))
         # transform one file
         conv.reset()
         conv.convertFile(input=full_name,
diff --git a/secop/client/baseclient.py b/secop/client/baseclient.py
index 2668f80..9d6858e 100644
--- a/secop/client/baseclient.py
+++ b/secop/client/baseclient.py
@@ -21,17 +21,26 @@
 # *****************************************************************************
 """Define Client side proxies"""
 
-from __future__ import print_function
+from __future__ import division, print_function
 
 import json
 import socket
-from select import select
 import threading
-from collections import OrderedDict
-
 import time
+from collections import OrderedDict
+from select import select
+
+import mlzlog
 import serial
 
+from secop.datatypes import CommandType, EnumType, get_datatype
+#from secop.protocol.encoding import ENCODERS
+#from secop.protocol.framing import FRAMERS
+#from secop.protocol.messages import *
+from secop.errors import EXCEPTIONS
+from secop.lib import formatException, formatExtendedStack, mkthread
+from secop.lib.parsing import format_time, parse_time
+
 try:
     # py3
     import queue
@@ -39,15 +48,7 @@ except ImportError:
     # py2
     import Queue as queue
 
-import mlzlog
 
-from secop.datatypes import get_datatype, EnumType, CommandType
-from secop.lib import mkthread, formatException, formatExtendedStack
-from secop.lib.parsing import parse_time, format_time
-#from secop.protocol.encoding import ENCODERS
-#from secop.protocol.framing import FRAMERS
-#from secop.protocol.messages import *
-from secop.errors import EXCEPTIONS
 
 
 class TCPConnection(object):
diff --git a/secop/datatypes.py b/secop/datatypes.py
index 7b15294..f8cb2d8 100644
--- a/secop/datatypes.py
+++ b/secop/datatypes.py
@@ -21,7 +21,13 @@
 # *****************************************************************************
 """Define validated data types."""
 
-from __future__ import print_function
+from __future__ import division, print_function
+
+from base64 import b64decode, b64encode
+
+from secop.errors import ProgrammingError, ProtocolError
+from secop.lib.enum import Enum
+from secop.parse import Parser
 
 try:
     # py2
@@ -30,11 +36,7 @@ except NameError:
     # py3
     unicode = str  # pylint: disable=redefined-builtin
 
-from base64 import b64encode, b64decode
 
-from secop.lib.enum import Enum
-from secop.errors import ProgrammingError, ProtocolError
-from secop.parse import Parser
 
 
 Parser = Parser()
diff --git a/secop/errors.py b/secop/errors.py
index c51a7dc..94ea5d1 100644
--- a/secop/errors.py
+++ b/secop/errors.py
@@ -21,6 +21,8 @@
 # *****************************************************************************
 """Define (internal) SECoP Errors"""
 
+from __future__ import division, print_function
+
 
 class SECoPError(RuntimeError):
 
diff --git a/secop/features.py b/secop/features.py
index 7ed467e..62b44c6 100644
--- a/secop/features.py
+++ b/secop/features.py
@@ -21,11 +21,13 @@
 # *****************************************************************************
 """Define Mixin Features for real Modules implemented in the server"""
 
-from __future__ import print_function
+from __future__ import division, print_function
 
-from secop.datatypes import EnumType, TupleOf, StringType, FloatRange, StructOf, ArrayOf, BoolType
-from secop.modules import Parameter, Command
+from secop.datatypes import (ArrayOf, BoolType, EnumType, FloatRange,
+                             StringType, StructOf, TupleOf)
 from secop.metaclass import ModuleMeta, add_metaclass
+from secop.modules import Command, Parameter
+
 
 @add_metaclass(ModuleMeta)
 class Feature(object):
diff --git a/secop/gui/mainwindow.py b/secop/gui/mainwindow.py
index f723e77..4cabdae 100644
--- a/secop/gui/mainwindow.py
+++ b/secop/gui/mainwindow.py
@@ -21,19 +21,17 @@
 #
 # *****************************************************************************
 
-from __future__ import print_function
+from __future__ import division, print_function
 
 import sys
 
-from secop.gui.qt import QMainWindow, QInputDialog, QTreeWidgetItem, QMessageBox, \
-    pyqtSlot, QObject, pyqtSignal
-
-from secop.gui.util import loadUi
-from secop.gui.nodectrl import NodeCtrl
-from secop.gui.modulectrl import ModuleCtrl
-from secop.gui.paramview import ParameterView
 from secop.client.baseclient import Client as SECNode
-
+from secop.gui.modulectrl import ModuleCtrl
+from secop.gui.nodectrl import NodeCtrl
+from secop.gui.paramview import ParameterView
+from secop.gui.qt import (QInputDialog, QMainWindow, QMessageBox, QObject,
+                          QTreeWidgetItem, pyqtSignal, pyqtSlot)
+from secop.gui.util import loadUi
 
 ITEM_TYPE_NODE = QTreeWidgetItem.UserType + 1
 ITEM_TYPE_GROUP = QTreeWidgetItem.UserType + 2
diff --git a/secop/gui/miniplot.py b/secop/gui/miniplot.py
index cc8c59a..5288612 100644
--- a/secop/gui/miniplot.py
+++ b/secop/gui/miniplot.py
@@ -22,12 +22,12 @@
 # *****************************************************************************
 
 
+from __future__ import division, print_function
+
 from os import path
 
-from secop.gui.qt import Qt, QColor, QWidget, QSize, \
-    QBrush, QPainter, QPolygonF, QPointF, QPen, QRectF
-
-
+from secop.gui.qt import (QBrush, QColor, QPainter, QPen, QPointF, QPolygonF,
+                          QRectF, QSize, Qt, QWidget)
 
 _magenta = QBrush(QColor('#A12F86'))
 _yellow = QBrush(QColor('yellow'))
diff --git a/secop/gui/modulectrl.py b/secop/gui/modulectrl.py
index 032f500..4c62412 100644
--- a/secop/gui/modulectrl.py
+++ b/secop/gui/modulectrl.py
@@ -22,7 +22,13 @@
 #
 # *****************************************************************************
 
-from __future__ import print_function
+from __future__ import division, print_function
+
+from secop.gui.params import ParameterView
+from secop.gui.qt import QCheckBox, QDialog, QLabel, QMessageBox, QPushButton, \
+    QSizePolicy, QWidget
+from secop.gui.util import loadUi
+from secop.gui.valuewidgets import get_widget
 
 try:
     # py2
@@ -31,15 +37,12 @@ except NameError:
     # py3
     unicode = str  # pylint: disable=redefined-builtin
 
-from secop.gui.util import loadUi
-from secop.gui.params import ParameterView
+
 
 #from secop.datatypes import ...
 
-from secop.gui.qt import QDialog, QLabel, QCheckBox, QWidget, QMessageBox, \
-    QPushButton, QSizePolicy
 
-from secop.gui.valuewidgets import get_widget
+
 
 
 class CommandDialog(QDialog):
diff --git a/secop/gui/nodectrl.py b/secop/gui/nodectrl.py
index fe75189..bf9c4b1 100644
--- a/secop/gui/nodectrl.py
+++ b/secop/gui/nodectrl.py
@@ -21,7 +21,17 @@
 #
 # *****************************************************************************
 
-from __future__ import print_function, division
+from __future__ import division, print_function
+
+import json
+import pprint
+from time import sleep
+
+from secop.datatypes import EnumType, StringType
+from secop.errors import SECoPError
+from secop.gui.qt import (QFont, QFontMetrics, QLabel, QMessageBox,
+                          QTextCursor, QWidget, pyqtSlot, toHtmlEscaped)
+from secop.gui.util import loadUi
 
 try:
     # py2
@@ -29,16 +39,8 @@ try:
 except NameError:
     unicode = str  # pylint: disable=redefined-builtin
 
-import pprint
-import json
-from time import sleep
 
-from secop.gui.qt import QWidget, QTextCursor, QFont, QFontMetrics, QLabel, \
-    QMessageBox, pyqtSlot, toHtmlEscaped
 
-from secop.gui.util import loadUi
-from secop.errors import SECoPError
-from secop.datatypes import StringType, EnumType
 
 
 class NodeCtrl(QWidget):
diff --git a/secop/gui/params/__init__.py b/secop/gui/params/__init__.py
index d60f8d6..d280a93 100644
--- a/secop/gui/params/__init__.py
+++ b/secop/gui/params/__init__.py
@@ -33,12 +33,13 @@ from secop.gui.qt import QWidget, QLabel, QPushButton as QButton, QLineEdit, \
     QMessageBox, QCheckBox, QSizePolicy, Qt, pyqtSignal, pyqtSlot
 
 from secop.gui.util import loadUi
-from secop.datatypes import EnumType
+from secop.datatypes import EnumType, FloatRange, IntRange
 from secop.lib import formatExtendedStack
 
 
 class ParameterWidget(QWidget):
     setRequested = pyqtSignal(str, str, object)  # module, parameter, target
+    plotRequested = pyqtSignal(str, str)  # module, parameter
     cmdRequested = pyqtSignal(str, str, list)  # module, command, args
 
     def __init__(self,
diff --git a/secop/gui/paramview.py b/secop/gui/paramview.py
index d5cdfdb..b2d65fc 100644
--- a/secop/gui/paramview.py
+++ b/secop/gui/paramview.py
@@ -21,6 +21,8 @@
 #
 # *****************************************************************************
 
+from __future__ import division, print_function
+
 try:
     # py2
     unicode(u'')
@@ -28,8 +30,7 @@ except NameError:
     # py3
     unicode = str  # pylint: disable=redefined-builtin
 
-from secop.gui.qt import QWidget, QLabel, QSizePolicy
-
+from secop.gui.qt import QLabel, QSizePolicy, QWidget
 from secop.gui.util import loadUi
 
 
diff --git a/secop/gui/qt.py b/secop/gui/qt.py
index 8f74747..03a39b4 100644
--- a/secop/gui/qt.py
+++ b/secop/gui/qt.py
@@ -22,7 +22,7 @@
 """Import needed stuff from PyQt4/PyQt5"""
 
 # pylint: disable=unused-import
-from __future__ import print_function
+from __future__ import division, print_function
 
 import sys
 
diff --git a/secop/gui/util.py b/secop/gui/util.py
index 6abe134..97fb9eb 100644
--- a/secop/gui/util.py
+++ b/secop/gui/util.py
@@ -21,6 +21,8 @@
 #
 # *****************************************************************************
 
+from __future__ import division, print_function
+
 from os import path
 
 from secop.gui.qt import uic
diff --git a/secop/gui/valuewidgets.py b/secop/gui/valuewidgets.py
index a497e69..c652a1b 100644
--- a/secop/gui/valuewidgets.py
+++ b/secop/gui/valuewidgets.py
@@ -21,18 +21,15 @@
 #
 # *****************************************************************************
 
-from __future__ import print_function
-
-from secop.datatypes import FloatRange, IntRange, StringType, BLOBType, \
-    EnumType, BoolType, TupleOf, StructOf, ArrayOf
-
-from secop.gui.qt import QDialog, QLabel, QLineEdit,\
-    QGroupBox, QSpinBox, QDoubleSpinBox, QComboBox, QCheckBox, \
-    QVBoxLayout, QGridLayout,  QFrame
+from __future__ import division, print_function
 
+from secop.datatypes import (ArrayOf, BLOBType, BoolType, EnumType, FloatRange,
+                             IntRange, StringType, StructOf, TupleOf)
+from secop.gui.qt import (QCheckBox, QComboBox, QDialog, QDoubleSpinBox,
+                          QFrame, QGridLayout, QGroupBox, QLabel, QLineEdit,
+                          QSpinBox, QVBoxLayout)
 from secop.gui.util import loadUi
 
-
 # XXX: implement live validators !!!!
 
 class StringWidget(QLineEdit):
diff --git a/secop/lib/enum.py b/secop/lib/enum.py
index 11024e4..f57dc16 100755
--- a/secop/lib/enum.py
+++ b/secop/lib/enum.py
@@ -22,6 +22,8 @@
 # *****************************************************************************
 """Enum class"""
 
+from __future__ import division, print_function
+
 __ALL__ = ['Enum']
 
 try:
diff --git a/secop/lib/parsing.py b/secop/lib/parsing.py
index e2cf0e8..78ee6c4 100644
--- a/secop/lib/parsing.py
+++ b/secop/lib/parsing.py
@@ -21,9 +21,11 @@
 # *****************************************************************************
 """Define parsing helpers"""
 
+from __future__ import division, print_function
+
 import re
 import time
-from datetime import tzinfo, timedelta, datetime
+from datetime import datetime, timedelta, tzinfo
 
 # format_time and parse_time could be simplified with external dateutil lib
 # http://stackoverflow.com/a/15228038
diff --git a/secop/lib/pidfile.py b/secop/lib/pidfile.py
index 88267a1..532ba38 100644
--- a/secop/lib/pidfile.py
+++ b/secop/lib/pidfile.py
@@ -20,8 +20,11 @@
 #
 # *****************************************************************************
 """Define pidfile helpers"""
-import os
+from __future__ import division, print_function
+
 import atexit
+import os
+
 import psutil
 
 
diff --git a/secop/lib/sequence.py b/secop/lib/sequence.py
index 3c28a40..2694f24 100644
--- a/secop/lib/sequence.py
+++ b/secop/lib/sequence.py
@@ -23,10 +23,12 @@
 
 """Utilities for modules that require sequenced actions on value change."""
 
+from __future__ import division, print_function
+
 from time import sleep
 
-from secop.lib import mkthread
 from secop.errors import IsBusyError
+from secop.lib import mkthread
 
 
 class Namespace(object):
diff --git a/secop/metaclass.py b/secop/metaclass.py
index 8a0a87d..a20acf8 100644
--- a/secop/metaclass.py
+++ b/secop/metaclass.py
@@ -21,9 +21,15 @@
 # *****************************************************************************
 """Define Metaclass for Modules/Features"""
 
-from __future__ import print_function
+from __future__ import division, print_function
+
+import time
 from collections import OrderedDict
 
+from secop.datatypes import EnumType
+from secop.errors import ProgrammingError
+from secop.params import Command, Override, Parameter
+
 try:
     # pylint: disable=unused-import
     from six import add_metaclass # for py2/3 compat
@@ -44,11 +50,7 @@ except ImportError:
             return metaclass(cls.__name__, cls.__bases__, orig_vars)
         return wrapper
 
-import time
 
-from secop.errors import ProgrammingError
-from secop.datatypes import EnumType
-from secop.params import Parameter, Override, Command
 
 EVENT_ONLY_ON_CHANGED_VALUES = True
 
diff --git a/secop/modules.py b/secop/modules.py
index 8f8ff6a..027add8 100644
--- a/secop/modules.py
+++ b/secop/modules.py
@@ -21,22 +21,26 @@
 # *****************************************************************************
 """Define Baseclasses for real Modules implemented in the server"""
 
-from __future__ import print_function
+from __future__ import division, print_function
+
+import sys
+import time
+
+from secop.datatypes import (EnumType, FloatRange, StringType, TupleOf,
+                             get_datatype)
+from secop.errors import ConfigError
+from secop.lib import (formatException, formatExtendedStack, mkthread,
+                       unset_value)
+from secop.lib.enum import Enum
+from secop.metaclass import ModuleMeta, add_metaclass
+from secop.params import Command, Override, Parameter
 
 # XXX: connect with 'protocol'-Modules.
 # Idea: every Module defined herein is also a 'protocol'-Module,
 # all others MUST derive from those, the 'interface'-class is still derived
 # from these base classes (how to do this?)
 
-import sys
-import time
 
-from secop.lib import formatExtendedStack, mkthread, unset_value, formatException
-from secop.lib.enum import Enum
-from secop.errors import ConfigError
-from secop.datatypes import EnumType, TupleOf, StringType, FloatRange, get_datatype
-from secop.metaclass import add_metaclass, ModuleMeta
-from secop.params import Command, Parameter, Override
 
 
 @add_metaclass(ModuleMeta)
diff --git a/secop/params.py b/secop/params.py
index 0dc852f..a6d78a5 100644
--- a/secop/params.py
+++ b/secop/params.py
@@ -21,9 +21,11 @@
 # *****************************************************************************
 """Define classes for Parameters/Commands and Overriding them"""
 
-from secop.lib import unset_value
+from __future__ import division, print_function
+
+from secop.datatypes import CommandType, DataType
 from secop.errors import ProgrammingError
-from secop.datatypes import DataType, CommandType
+from secop.lib import unset_value
 
 EVENT_ONLY_ON_CHANGED_VALUES = False
 
diff --git a/secop/parse.py b/secop/parse.py
index 591d15b..3e2921c 100644
--- a/secop/parse.py
+++ b/secop/parse.py
@@ -36,7 +36,7 @@ text -> string
 
 further convertions are done by the validator of the datatype....
 """
-from __future__ import print_function
+from __future__ import division, print_function
 
 from collections import OrderedDict
 
diff --git a/secop/paths.py b/secop/paths.py
index 22de09c..3460d2b 100644
--- a/secop/paths.py
+++ b/secop/paths.py
@@ -21,6 +21,8 @@
 # *****************************************************************************
 """Pathes. how to find what and where..."""
 
+from __future__ import division, print_function
+
 import sys
 from os import path
 
diff --git a/secop/protocol/dispatcher.py b/secop/protocol/dispatcher.py
index da024c4..f92a4c0 100644
--- a/secop/protocol/dispatcher.py
+++ b/secop/protocol/dispatcher.py
@@ -36,20 +36,19 @@ Interface to the modules:
  - remove_module(modulename_or_obj): removes the module (during shutdown)
 
 """
-from __future__ import print_function
+from __future__ import division, print_function
 
-from time import time as currenttime
 import threading
+from time import time as currenttime
 
-from secop.protocol.messages import EVENTREPLY, IDENTREQUEST, IDENTREPLY, \
-    ENABLEEVENTSREPLY, DESCRIPTIONREPLY, WRITEREPLY, COMMANDREPLY, \
-    DISABLEEVENTSREPLY, HEARTBEATREPLY
-
-from secop.errors import NoSuchModuleError, NoSuchCommandError, \
-    NoSuchParameterError, BadValueError, ReadOnlyError, \
-    ProtocolError, SECoPServerError as InternalError
-
+from secop.errors import SECoPServerError as InternalError
+from secop.errors import (BadValueError, NoSuchCommandError, NoSuchModuleError,
+                          NoSuchParameterError, ProtocolError, ReadOnlyError)
 from secop.params import Parameter
+from secop.protocol.messages import (COMMANDREPLY, DESCRIPTIONREPLY,
+                                     DISABLEEVENTSREPLY, ENABLEEVENTSREPLY,
+                                     EVENTREPLY, HEARTBEATREPLY, IDENTREPLY,
+                                     IDENTREQUEST, WRITEREPLY)
 
 try:
     unicode('a')
diff --git a/secop/protocol/interface/tcp.py b/secop/protocol/interface/tcp.py
index 25978e1..8fe1c62 100644
--- a/secop/protocol/interface/tcp.py
+++ b/secop/protocol/interface/tcp.py
@@ -19,21 +19,23 @@
 #
 # *****************************************************************************
 """provides tcp interface to the SECoP Server"""
-from __future__ import print_function
+from __future__ import division, print_function
 
-import sys
-import socket
 import collections
+import socket
+import sys
+
+from secop.errors import SECoPError
+from secop.lib import (formatException, formatExtendedStack,
+                       formatExtendedTraceback)
+from secop.protocol.interface import decode_msg, encode_msg_frame, get_msg
+from secop.protocol.messages import HELPREPLY, HELPREQUEST, HelpMessage
 
 try:
     import socketserver  # py3
 except ImportError:
     import SocketServer as socketserver  # py2
 
-from secop.lib import formatExtendedStack, formatException, formatExtendedTraceback
-from secop.protocol.messages import HELPREQUEST, HELPREPLY, HelpMessage
-from secop.errors import SECoPError
-from secop.protocol.interface import encode_msg_frame, get_msg, decode_msg
 
 
 DEF_PORT = 10767
diff --git a/secop/protocol/interface/zmq.py b/secop/protocol/interface/zmq.py
index 6020a5c..8623819 100644
--- a/secop/protocol/interface/zmq.py
+++ b/secop/protocol/interface/zmq.py
@@ -21,6 +21,8 @@
 # *****************************************************************************
 """provide a zmq server"""
 
+from __future__ import division, print_function
+
 # tbd.
 
 # use zmq frames??
diff --git a/secop/protocol/messages.py b/secop/protocol/messages.py
index 69efbb9..2d69b81 100644
--- a/secop/protocol/messages.py
+++ b/secop/protocol/messages.py
@@ -20,7 +20,7 @@
 #
 # *****************************************************************************
 """Define SECoP Messages"""
-from __future__ import print_function
+from __future__ import division, print_function
 
 # allowed actions:
 
diff --git a/secop/server.py b/secop/server.py
index 5235eba..3b7d134 100644
--- a/secop/server.py
+++ b/secop/server.py
@@ -21,14 +21,19 @@
 #
 # *****************************************************************************
 """Define helpers"""
-from __future__ import print_function
+from __future__ import division, print_function
 
-import os
 import ast
-import time
+import os
 import threading
+import time
 from collections import OrderedDict
 
+from daemon import DaemonContext
+
+from secop.errors import ConfigError
+from secop.lib import formatException, get_class, getGeneralConfig
+
 try:
     import configparser  # py3
 except ImportError:
@@ -39,15 +44,12 @@ try:
 except ImportError:
     from Queue import Queue # py 2
 
-from daemon import DaemonContext
 
 try:
     import daemon.pidlockfile as pidlockfile
 except ImportError:
     import daemon.pidfile as pidlockfile
 
-from secop.lib import get_class, formatException, getGeneralConfig
-from secop.errors import ConfigError
 
 
 
diff --git a/secop/simulation.py b/secop/simulation.py
index 85225a8..7671d55 100644
--- a/secop/simulation.py
+++ b/secop/simulation.py
@@ -21,12 +21,14 @@
 # *****************************************************************************
 """Define Simulation classes"""
 
+from __future__ import division, print_function
+
 import random
 from time import sleep
 
-from secop.modules import Module, Readable, Writable, Drivable, Parameter
-from secop.lib import mkthread
 from secop.datatypes import FloatRange
+from secop.lib import mkthread
+from secop.modules import Drivable, Module, Parameter, Readable, Writable
 
 
 class SimBase(object):
diff --git a/secop/version.py b/secop/version.py
index dbb9dec..19991d7 100644
--- a/secop/version.py
+++ b/secop/version.py
@@ -23,10 +23,10 @@
 #
 # *****************************************************************************
 
-from __future__ import print_function
+from __future__ import division, print_function
 
 import os.path
-from subprocess import Popen, PIPE
+from subprocess import PIPE, Popen
 
 __all__ = ['get_version']
 
diff --git a/secop_demo/cryo.py b/secop_demo/cryo.py
index 5f5501d..68168e4 100644
--- a/secop_demo/cryo.py
+++ b/secop_demo/cryo.py
@@ -20,13 +20,15 @@
 # *****************************************************************************
 """playing implementation of a (simple) simulated cryostat"""
 
-from math import atan
-import time
-import random
+from __future__ import division, print_function
 
-from secop.modules import Drivable, Command, Parameter
-from secop.datatypes import FloatRange, EnumType, TupleOf
+import random
+import time
+from math import atan
+
+from secop.datatypes import EnumType, FloatRange, TupleOf
 from secop.lib import clamp, mkthread
+from secop.modules import Command, Drivable, Parameter
 
 
 class CryoBase(Drivable):
diff --git a/secop_demo/modules.py b/secop_demo/modules.py
index 5b826c0..d9ed8dd 100644
--- a/secop_demo/modules.py
+++ b/secop_demo/modules.py
@@ -20,13 +20,16 @@
 # *****************************************************************************
 """testing devices"""
 
-import time
+from __future__ import division, print_function
+
 import random
 import threading
+import time
 
+from secop.datatypes import (ArrayOf, BoolType, EnumType, FloatRange, IntRange,
+                             StringType, StructOf, TupleOf)
 from secop.lib.enum import Enum
-from secop.modules import Readable, Drivable, Parameter, Override
-from secop.datatypes import EnumType, FloatRange, IntRange, ArrayOf, StringType, TupleOf, StructOf, BoolType
+from secop.modules import Drivable, Override, Parameter, Readable
 
 
 class Switch(Drivable):
diff --git a/secop_demo/test.py b/secop_demo/test.py
index 72a0991..5d2d4d2 100644
--- a/secop_demo/test.py
+++ b/secop_demo/test.py
@@ -20,6 +20,8 @@
 # *****************************************************************************
 """testing devices"""
 
+from __future__ import division, print_function
+
 try:
     # py2
     unicode
@@ -29,8 +31,8 @@ except NameError:
 
 import random
 
-from secop.modules import Readable, Drivable, Communicator, Parameter
 from secop.datatypes import FloatRange, StringType
+from secop.modules import Communicator, Drivable, Parameter, Readable
 
 
 class LN2(Readable):
diff --git a/secop_ess/epics.py b/secop_ess/epics.py
index 03904f6..bcf4ebd 100644
--- a/secop_ess/epics.py
+++ b/secop_ess/epics.py
@@ -20,10 +20,10 @@
 #
 # *****************************************************************************
 
-from __future__ import absolute_import
+from __future__ import absolute_import, division, print_function
 
 from secop.datatypes import EnumType, FloatRange, StringType
-from secop.modules import Readable, Drivable, Parameter
+from secop.modules import Drivable, Parameter, Readable
 
 try:
     from pvaccess import Channel  # import EPIVSv4 functionallity, PV access
diff --git a/secop_mlz/amagnet.py b/secop_mlz/amagnet.py
index 793ee65..b65c761 100644
--- a/secop_mlz/amagnet.py
+++ b/secop_mlz/amagnet.py
@@ -25,12 +25,14 @@
 
 # partially borrowed from nicos
 
+from __future__ import division, print_function
+
 import math
 
+from secop.datatypes import ArrayOf, FloatRange, StringType, StructOf, TupleOf
+from secop.errors import ConfigError, DisabledError
 from secop.lib.sequence import SequencerMixin, Step
-from secop.datatypes import StringType, TupleOf, FloatRange, ArrayOf, StructOf
-from secop.errors import DisabledError, ConfigError
-from secop.modules import Parameter, Drivable
+from secop.modules import Drivable, Parameter
 
 
 class GarfieldMagnet(SequencerMixin, Drivable):
diff --git a/secop_mlz/entangle.py b/secop_mlz/entangle.py
index 572c55c..e9395b8 100644
--- a/secop_mlz/entangle.py
+++ b/secop_mlz/entangle.py
@@ -27,21 +27,23 @@
 Here we support devices which fulfill the official
 MLZ TANGO interface for the respective device classes.
 """
-from __future__ import division
+from __future__ import division, print_function
 
 import re
-from time import sleep, time as currenttime
 import threading
+from time import time as currenttime
+from time import sleep
 
 import PyTango
 
-from secop.lib import lazy_property
 #from secop.parse import Parser
-from secop.datatypes import IntRange, FloatRange, StringType, TupleOf, \
-    ArrayOf, EnumType
-from secop.errors import ConfigError, ProgrammingError, CommunicationFailedError, \
-    HardwareError
-from secop.modules import Parameter, Command, Override, Module, Readable, Drivable
+from secop.datatypes import (ArrayOf, EnumType, FloatRange, IntRange,
+                             StringType, TupleOf)
+from secop.errors import (CommunicationFailedError, ConfigError, HardwareError,
+                          ProgrammingError)
+from secop.lib import lazy_property
+from secop.modules import (Command, Drivable, Module, Override, Parameter,
+                           Readable)
 
 #####
 
diff --git a/setup.py b/setup.py
index e87c107..00e3672 100644
--- a/setup.py
+++ b/setup.py
@@ -22,13 +22,15 @@
 #
 # *****************************************************************************
 
-from setuptools import setup, find_packages
-from os import path, listdir
+from __future__ import division, print_function
+
 from glob import glob
+from os import listdir, path
+
+from setuptools import find_packages, setup
 
 import secop.version
 
-
 scripts = glob(path.join('bin', 'secop-*'))
 
 uidir = path.join(path.dirname(__file__), 'secop', 'gui', 'ui')
diff --git a/test/conftest.py b/test/conftest.py
index 6201d0c..7119cb5 100644
--- a/test/conftest.py
+++ b/test/conftest.py
@@ -1,4 +1,6 @@
 # content of conftest.py
+from __future__ import division, print_function
+
 import pytest
 
 
@@ -15,5 +17,6 @@ def constants():
 
 
 @pytest.fixture(scope="session")
+# pylint: disable=redefined-builtin
 def globals():
     return dict()
diff --git a/test/test_client_baseclient.py b/test/test_client_baseclient.py
index 3de9530..2f4b434 100644
--- a/test/test_client_baseclient.py
+++ b/test/test_client_baseclient.py
@@ -20,18 +20,21 @@
 #
 # *****************************************************************************
 """test base client."""
-from __future__ import print_function
+from __future__ import division, print_function
 
 import sys
-from os import path
-sys.path.insert(0, path.abspath(path.join(path.dirname(__file__), '..')))
-
 from collections import OrderedDict
+from os import path
 
 import pytest
 
 from secop.client.baseclient import Client
 
+sys.path.insert(0, path.abspath(path.join(path.dirname(__file__), '..')))
+
+
+
+
 # define Test-only connection object
 
 
diff --git a/test/test_datatypes.py b/test/test_datatypes.py
index 1d4ddbd..4fcb708 100644
--- a/test/test_datatypes.py
+++ b/test/test_datatypes.py
@@ -21,17 +21,22 @@
 # *****************************************************************************
 """test data types."""
 
+from __future__ import division, print_function
+
 import sys
 from os import path
-sys.path.insert(0, path.abspath(path.join(path.dirname(__file__), '..')))
 
 # no fixtures needed
 import pytest
 
+from secop.datatypes import (ArrayOf, BLOBType, BoolType, DataType, EnumType,
+                             FloatRange, IntRange, ProgrammingError,
+                             StringType, StructOf, TupleOf, get_datatype)
+
+sys.path.insert(0, path.abspath(path.join(path.dirname(__file__), '..')))
+
+
 
-from secop.datatypes import DataType, FloatRange, IntRange, \
-    EnumType, BLOBType, StringType, BoolType, ArrayOf, TupleOf, StructOf, \
-    get_datatype, ProgrammingError
 
 
 def test_DataType():
diff --git a/test/test_lib_enum.py b/test/test_lib_enum.py
index ca93a72..a16019f 100644
--- a/test/test_lib_enum.py
+++ b/test/test_lib_enum.py
@@ -21,15 +21,20 @@
 # *****************************************************************************
 """test Enum type."""
 
+from __future__ import division, print_function
+
 import sys
 from os import path
-sys.path.insert(0, path.abspath(path.join(path.dirname(__file__), '..')))
 
 # no fixtures needed
 import pytest
 
+from secop.lib.enum import Enum, EnumMember
+
+sys.path.insert(0, path.abspath(path.join(path.dirname(__file__), '..')))
+
+
 
-from secop.lib.enum import EnumMember, Enum
 
 
 def test_EnumMember():
diff --git a/test/test_modules.py b/test/test_modules.py
index 9589825..120192c 100644
--- a/test/test_modules.py
+++ b/test/test_modules.py
@@ -20,25 +20,28 @@
 #
 # *****************************************************************************
 """test data types."""
-from __future__ import print_function
+from __future__ import division, print_function
 
 import sys
 from os import path
-sys.path.insert(0, path.abspath(path.join(path.dirname(__file__), '..')))
 
 # no fixtures needed
 import pytest
 
+from secop.datatypes import BoolType, EnumType
+from secop.metaclass import ModuleMeta
+from secop.modules import Communicator, Drivable, Module, Readable, Writable
+from secop.params import Command, Override, Parameter
+
+sys.path.insert(0, path.abspath(path.join(path.dirname(__file__), '..')))
+
+
 try:
     import Queue as queue
 except ImportError:
     import queue as queue
 
-from secop.datatypes import BoolType, EnumType
 
-from secop.metaclass import ModuleMeta
-from secop.params import Command, Parameter, Override
-from secop.modules import Module, Readable, Writable, Drivable, Communicator
 
 
 def test_Communicator():
diff --git a/test/test_params.py b/test/test_params.py
index 4c98cb2..7cd6f30 100644
--- a/test/test_params.py
+++ b/test/test_params.py
@@ -21,17 +21,22 @@
 # *****************************************************************************
 """test data types."""
 
+from __future__ import division, print_function
+
 import sys
 from os import path
-sys.path.insert(0, path.abspath(path.join(path.dirname(__file__), '..')))
 
 # no fixtures needed
 import pytest
 
-
 from secop.datatypes import BoolType
+from secop.params import Command, Override, Parameter
+
+sys.path.insert(0, path.abspath(path.join(path.dirname(__file__), '..')))
+
+
+
 
-from secop.params import Command, Parameter, Override
 
 
 def test_Command():
diff --git a/test/test_parse.py b/test/test_parse.py
index cb2a84b..ad20d7b 100644
--- a/test/test_parse.py
+++ b/test/test_parse.py
@@ -21,16 +21,21 @@
 # *****************************************************************************
 """test data types."""
 
-import sys
-from os import path
-sys.path.insert(0, path.abspath(path.join(path.dirname(__file__), '..')))
+from __future__ import division, print_function
 
+import sys
 from collections import OrderedDict
+from os import path
 
 import pytest
 
 from secop.parse import Parser
 
+sys.path.insert(0, path.abspath(path.join(path.dirname(__file__), '..')))
+
+
+
+
 # pylint: disable=redefined-outer-name
 @pytest.fixture(scope="module")
 def parser():
diff --git a/test/test_test.py b/test/test_test.py
index 62d87ed..972a6a1 100644
--- a/test/test_test.py
+++ b/test/test_test.py
@@ -1,3 +1,5 @@
+from __future__ import division, print_function
+
 
 def test_assert():
     assert 1