diff --git a/TermTk/TTkAbstract/abstractitemmodel.py b/TermTk/TTkAbstract/abstractitemmodel.py
index 402e7d5d..24421a22 100644
--- a/TermTk/TTkAbstract/abstractitemmodel.py
+++ b/TermTk/TTkAbstract/abstractitemmodel.py
@@ -22,7 +22,7 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
+from TermTk.TTkCore.signal import pyTTkSignal
 
 class TTkAbstractItemModel():
     __slots__ = (
diff --git a/TermTk/TTkAbstract/abstractscrollarea.py b/TermTk/TTkAbstract/abstractscrollarea.py
index 6221afd8..430c9182 100644
--- a/TermTk/TTkAbstract/abstractscrollarea.py
+++ b/TermTk/TTkAbstract/abstractscrollarea.py
@@ -22,10 +22,9 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from TermTk.TTkCore.constant import TTkConstant, TTkK
-from TermTk.TTkCore.log import TTkLog
+from TermTk.TTkCore.constant import TTkK
 from TermTk.TTkCore.cfg import *
-from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
+from TermTk.TTkCore.signal import pyTTkSlot
 from TermTk.TTkWidgets.widget import TTkWidget
 from TermTk.TTkWidgets.scrollbar import TTkScrollBar
 from TermTk.TTkLayouts.gridlayout import TTkGridLayout
diff --git a/TermTk/TTkAbstract/abstractscrollview.py b/TermTk/TTkAbstract/abstractscrollview.py
index db7d9c58..ea04e513 100644
--- a/TermTk/TTkAbstract/abstractscrollview.py
+++ b/TermTk/TTkAbstract/abstractscrollview.py
@@ -22,9 +22,8 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from TermTk.TTkCore.constant import TTkConstant, TTkK
+from TermTk.TTkCore.constant import TTkK
 from TermTk.TTkCore.cfg import *
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
 from TermTk.TTkWidgets.widget import TTkWidget
 
diff --git a/TermTk/TTkCore/TTkTerm/readinputlinux.py b/TermTk/TTkCore/TTkTerm/readinputlinux.py
index e0cc4ebc..1ab2f429 100644
--- a/TermTk/TTkCore/TTkTerm/readinputlinux.py
+++ b/TermTk/TTkCore/TTkTerm/readinputlinux.py
@@ -29,7 +29,6 @@ except Exception as e:
     print(f'ERROR: {e}')
     exit(1)
 
-from TermTk.TTkCore.log import TTkLog
 
 class ReadInput():
     __slots__ = ('_readPipe')
diff --git a/TermTk/TTkCore/canvas.py b/TermTk/TTkCore/canvas.py
index 145ecdf0..257cd7a7 100644
--- a/TermTk/TTkCore/canvas.py
+++ b/TermTk/TTkCore/canvas.py
@@ -25,10 +25,10 @@
 from TermTk.TTkCore.TTkTerm.term import TTkTerm
 from TermTk.TTkCore.constant import TTkK
 from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkCore.cfg import TTkCfg, TTkGlbl
+from TermTk.TTkCore.cfg import TTkCfg
 from TermTk.TTkCore.color import TTkColor
 from TermTk.TTkCore.string import TTkString
-from TermTk.TTkCore.helper import TTkHelper
+
 
 class TTkCanvas:
     ''' Init the Canvas object
diff --git a/TermTk/TTkCore/color.py b/TermTk/TTkCore/color.py
index 507430a8..8173990f 100644
--- a/TermTk/TTkCore/color.py
+++ b/TermTk/TTkCore/color.py
@@ -22,8 +22,6 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkCore.cfg import TTkCfg
 from TermTk.TTkCore.constant import TTkK
 from TermTk.TTkCore.helper import TTkHelper
 
@@ -82,7 +80,7 @@ class _TTkColor:
             r,g,b = self.fgToRGB()
         else:
             r,g,b = self.bgToRGB()
-        return "#{:06x}".format(r<<16|g<<8|b)
+        return f"#{r<<16|g<<8|b:06x}"
 
     def fgToRGB(self):
         if self._fg == "": return 0xff,0xff,0xff
diff --git a/TermTk/TTkCore/filebuffer.py b/TermTk/TTkCore/filebuffer.py
index 6f52443e..7d75a9ff 100644
--- a/TermTk/TTkCore/filebuffer.py
+++ b/TermTk/TTkCore/filebuffer.py
@@ -26,7 +26,7 @@ import os
 import re
 import threading
 from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkCore.signal import pyTTkSignal, pyTTkSlot
+from TermTk.TTkCore.signal import pyTTkSignal
 
 '''
              w1   w3   w2   w5
@@ -74,7 +74,7 @@ class TTkFileBuffer():
         self._width=0
         self._buffer = [None]*self._numW
         self._pages = [None]
-        self._fd = open(self._filename,'r')
+        self._fd = open(self._filename)
         threading.Thread(target=self.createIndex).start()
 
     def __del__(self):
@@ -129,9 +129,7 @@ class TTkFileBuffer():
     def createIndex(self):
         # TTkLog.debug(f"Start Indexing {self._filename}")
         indexes = []
-        lines = 0
         offset = 0
-        width = 0
         fileSize = os.stat(self._filename).st_size
         chunkSize = 0x1000000 # ~16M
         with open(self._filename,'rb') as infile:
@@ -148,7 +146,7 @@ class TTkFileBuffer():
                 offset+=len(chunk)
                 self.indexUpdated.emit(offset/fileSize)
                 # TTkLog.debug(f"{self._filename} {offset/fileSize} ...")
-        self._width = max([ (self._indexes[i+1]-self._indexes[i]) for i in range(len(self._indexes)-1) ])
+        self._width = max( (self._indexes[i+1]-self._indexes[i]) for i in range(len(self._indexes)-1) )
         self.indexUpdated.emit(1.0)
         self.indexed.emit()
         # TTkLog.debug(f"{self._filename} {offset/fileSize} END")
@@ -158,7 +156,7 @@ class TTkFileBuffer():
         id = 0
         rr = re.compile(regex, re.IGNORECASE if ignoreCase else 0)
         TTkLog.debug(f"Search RE: {regex}")
-        with open(self._filename,'r') as infile:
+        with open(self._filename) as infile:
             for line in infile:
                 ma = rr.search(line)
                 if ma:
@@ -168,7 +166,7 @@ class TTkFileBuffer():
 
     def search(self, txt):
         indexes = []
-        with open(self._filename,'r') as infile:
+        with open(self._filename) as infile:
             for line in infile:
                 if txt in line:
                     indexes.append(id)
diff --git a/TermTk/TTkCore/helper.py b/TermTk/TTkCore/helper.py
index cce83a51..e329f9f2 100644
--- a/TermTk/TTkCore/helper.py
+++ b/TermTk/TTkCore/helper.py
@@ -24,7 +24,6 @@
 
 from TermTk.TTkCore.TTkTerm.colors import TTkTermColor
 from TermTk.TTkCore.TTkTerm.term import TTkTerm
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkCore.cfg import TTkCfg, TTkGlbl
 from TermTk.TTkCore.constant import TTkK
 
@@ -59,12 +58,6 @@ class TTkHelper:
     def addShortcut(widget, letter):
         TTkHelper._shortcut.append(TTkHelper._Shortcut(letter, widget))
 
-    @staticmethod
-    def isParent(parent, widget):
-        if parent==widget: return True
-        if widget.parentWidget() is None: return False
-        return TTkHelper.isParent(parent,widget.parentWidget())
-
     @staticmethod
     def execShortcut(letter, widget=None):
         if not isinstance(letter, str): return
@@ -319,6 +312,7 @@ class TTkHelper:
             layout = layout.parent()
         return (wx, wy)
 
+    @staticmethod
     def nextFocus(widget):
         rootWidget = TTkHelper.rootOverlay(widget)
         if not rootWidget:
@@ -342,6 +336,7 @@ class TTkHelper:
             first.setFocus()
             first.update()
 
+    @staticmethod
     def prevFocus(widget):
         rootWidget = TTkHelper.rootOverlay(widget)
         if not rootWidget:
diff --git a/TermTk/TTkCore/signal.py b/TermTk/TTkCore/signal.py
index 6117b586..32bb536d 100644
--- a/TermTk/TTkCore/signal.py
+++ b/TermTk/TTkCore/signal.py
@@ -1,4 +1,3 @@
-
 #!/usr/bin/env python3
 
 # MIT License
diff --git a/TermTk/TTkCore/string.py b/TermTk/TTkCore/string.py
index 14e28d5f..8e449e62 100644
--- a/TermTk/TTkCore/string.py
+++ b/TermTk/TTkCore/string.py
@@ -25,8 +25,6 @@
 import re
 
 from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
 from TermTk.TTkCore.color import TTkColor, _TTkColor
 
 class TTkString():
@@ -71,6 +69,7 @@ class TTkString():
         self._hasTab = '\t' in self._text
         # raise AttributeError(f"{type(text)} not supported in TTkString")
 
+    @staticmethod
     def _parseAnsi(text, color = TTkColor.RST):
         pos = 0
         txtret = ""
@@ -281,7 +280,6 @@ class TTkString():
             ret._text   = self._text.replace(*args, **kwargs)
         else:
             start = 0
-            oldPos=0
             while pos := self._text.index(old, start) if old in self._text[start:] else None:
                 ret._colors += self._colors[start:pos+oldLen] + [self._colors[pos+oldLen-1]]*(newLen-oldLen)
                 start = pos+oldLen
diff --git a/TermTk/TTkCore/timer.py b/TermTk/TTkCore/timer.py
index 662c415d..347778e6 100644
--- a/TermTk/TTkCore/timer.py
+++ b/TermTk/TTkCore/timer.py
@@ -24,8 +24,6 @@
 
 import threading, time
 
-from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
 
 
diff --git a/TermTk/TTkCore/ttk.py b/TermTk/TTkCore/ttk.py
index f82e8323..6e104c99 100644
--- a/TermTk/TTkCore/ttk.py
+++ b/TermTk/TTkCore/ttk.py
@@ -31,11 +31,9 @@ from TermTk.TTkCore.TTkTerm.input import TTkInput
 from TermTk.TTkCore.TTkTerm.term import TTkTerm
 from TermTk.TTkCore.constant import TTkK
 from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
 from TermTk.TTkCore.cfg import *
 from TermTk.TTkCore.timer import *
 from TermTk.TTkTheme.theme import TTkTheme
-from TermTk.TTkLayouts.layout import TTkLayout
 from TermTk.TTkWidgets.widget import *
 
 class TTk(TTkWidget):
@@ -192,7 +190,7 @@ class TTk(TTkWidget):
                 self.setGeometry(0,0,TTkGlbl.term_w,TTkGlbl.term_h)
                 TTkLog.info(f"Resize: w:{TTkGlbl.term_w}, h:{TTkGlbl.term_h}")
             elif evt is TTkK.QUIT_EVENT:
-                TTkLog.debug(f"Quit.")
+                TTkLog.debug("Quit.")
                 break
             else:
                 TTkLog.error(f"Unhandled Event {evt}")
diff --git a/TermTk/TTkLayouts/boxlayout.py b/TermTk/TTkLayouts/boxlayout.py
index 33e76350..82166de9 100644
--- a/TermTk/TTkLayouts/boxlayout.py
+++ b/TermTk/TTkLayouts/boxlayout.py
@@ -26,7 +26,6 @@
 **Box Layout** [`Tutorial <https://ceccopierangiolieugenio.github.io/pyTermTk/tutorial/002-layout.html#simple-ttkvboxlayout>`_]
 '''
 
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkLayouts.gridlayout import TTkGridLayout
 
 class TTkHBoxLayout(TTkGridLayout):
diff --git a/TermTk/TTkLayouts/gridlayout.py b/TermTk/TTkLayouts/gridlayout.py
index f4c451bc..ac7395a3 100644
--- a/TermTk/TTkLayouts/gridlayout.py
+++ b/TermTk/TTkLayouts/gridlayout.py
@@ -27,8 +27,7 @@
 '''
 
 from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkLayouts.layout import TTkLayout, TTkWidgetItem
+from TermTk.TTkLayouts.layout import TTkLayout
 
 class TTkGridLayout(TTkLayout):
     '''
diff --git a/TermTk/TTkLayouts/layout.py b/TermTk/TTkLayouts/layout.py
index e09d804b..6f8b7331 100644
--- a/TermTk/TTkLayouts/layout.py
+++ b/TermTk/TTkLayouts/layout.py
@@ -26,7 +26,6 @@
 **Layout** [`Tutorial <https://ceccopierangiolieugenio.github.io/pyTermTk/tutorial/002-layout.html#simple-ttklayout>`_]
 '''
 
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkCore.constant import TTkK
 
 class TTkLayoutItem:
diff --git a/TermTk/TTkTemplates/color.py b/TermTk/TTkTemplates/color.py
index 093ca8dc..3e843628 100644
--- a/TermTk/TTkTemplates/color.py
+++ b/TermTk/TTkTemplates/color.py
@@ -23,7 +23,6 @@
 # SOFTWARE.
 
 from TermTk.TTkCore.color import TTkColor
-from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
 
 class TColor():
     #__slots__ = ('_color')
diff --git a/TermTk/TTkTestWidgets/logviewer.py b/TermTk/TTkTestWidgets/logviewer.py
index 8e7326cb..4c63a333 100644
--- a/TermTk/TTkTestWidgets/logviewer.py
+++ b/TermTk/TTkTestWidgets/logviewer.py
@@ -26,10 +26,7 @@ import os
 from TermTk.TTkCore.constant import TTkK
 from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkCore.color import TTkColor
-from TermTk.TTkWidgets.frame import TTkFrame
-from TermTk.TTkTemplates.color import TColor
-from TermTk.TTkTemplates.text  import TText
-from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
+from TermTk.TTkCore.signal import pyTTkSlot
 from TermTk.TTkAbstract.abstractscrollarea import TTkAbstractScrollArea
 from TermTk.TTkAbstract.abstractscrollview import TTkAbstractScrollView
 
@@ -49,7 +46,7 @@ class _TTkLogViewer(TTkAbstractScrollView):
         self.update()
 
     def viewFullAreaSize(self) -> (int, int):
-        w = max([ len(m) for m in self._messages])
+        w = max( len(m) for m in self._messages)
         h = len(self._messages)
         return w , h
 
@@ -76,7 +73,6 @@ class _TTkLogViewer(TTkAbstractScrollView):
     def paintEvent(self):
         ox,oy = self.getViewOffsets()
         _,h = self.size()
-        offset = max(0,ox)
         for y, message in enumerate(self._messages[oy:]):
             self._canvas.drawText(pos=(0,y),text=message[ox:])
             c = TTkColor.RST
diff --git a/TermTk/TTkTestWidgets/testwidgetsizes.py b/TermTk/TTkTestWidgets/testwidgetsizes.py
index 23483abe..f4384907 100644
--- a/TermTk/TTkTestWidgets/testwidgetsizes.py
+++ b/TermTk/TTkTestWidgets/testwidgetsizes.py
@@ -22,8 +22,6 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkCore.color import TTkColor
 from TermTk.TTkWidgets.frame import *
 
 class TTkTestWidgetSizes(TTkFrame):
diff --git a/TermTk/TTkTheme/fileicon_nerd.py b/TermTk/TTkTheme/fileicon_nerd.py
index 363540af..0af6dd84 100644
--- a/TermTk/TTkTheme/fileicon_nerd.py
+++ b/TermTk/TTkTheme/fileicon_nerd.py
@@ -30,7 +30,7 @@
 
 import re
 import os
-from TermTk.TTkCore.color import TTkColor
+
 
 class FileIcon():
     folderClose = ''
diff --git a/TermTk/TTkWidgets/Fancy/table.py b/TermTk/TTkWidgets/Fancy/table.py
index 0987fa18..ea88d186 100644
--- a/TermTk/TTkWidgets/Fancy/table.py
+++ b/TermTk/TTkWidgets/Fancy/table.py
@@ -22,13 +22,8 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from TermTk.TTkCore.cfg import TTkCfg
 from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
-from TermTk.TTkCore.color import TTkColor
 from TermTk.TTkWidgets.Fancy.tableview import TTkFancyTableView
-from TermTk.TTkLayouts.gridlayout import TTkGridLayout
 from TermTk.TTkAbstract.abstractscrollarea import TTkAbstractScrollArea
 
 class TTkFancyTable(TTkAbstractScrollArea):
diff --git a/TermTk/TTkWidgets/Fancy/tableview.py b/TermTk/TTkWidgets/Fancy/tableview.py
index 16b4fdb7..a4f231a4 100644
--- a/TermTk/TTkWidgets/Fancy/tableview.py
+++ b/TermTk/TTkWidgets/Fancy/tableview.py
@@ -22,9 +22,7 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from TermTk.TTkCore.cfg import TTkCfg
 from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
 from TermTk.TTkCore.color import TTkColor
 from TermTk.TTkWidgets.widget import TTkWidget
diff --git a/TermTk/TTkWidgets/Fancy/tree.py b/TermTk/TTkWidgets/Fancy/tree.py
index 1e51b9b0..040f7bd5 100644
--- a/TermTk/TTkWidgets/Fancy/tree.py
+++ b/TermTk/TTkWidgets/Fancy/tree.py
@@ -22,13 +22,8 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from TermTk.TTkCore.cfg import TTkCfg
 from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
-from TermTk.TTkCore.color import TTkColor
 from TermTk.TTkWidgets.Fancy.treewidget import TTkFancyTreeWidget
-from TermTk.TTkLayouts.gridlayout import TTkGridLayout
 from TermTk.TTkAbstract.abstractscrollarea import TTkAbstractScrollArea
 
 class TTkFancyTree(TTkAbstractScrollArea):
diff --git a/TermTk/TTkWidgets/Fancy/treeview.py b/TermTk/TTkWidgets/Fancy/treeview.py
index 1fd1a64e..9c0321d6 100644
--- a/TermTk/TTkWidgets/Fancy/treeview.py
+++ b/TermTk/TTkWidgets/Fancy/treeview.py
@@ -22,11 +22,6 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from TermTk.TTkCore.cfg import TTkCfg
-from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
-from TermTk.TTkCore.color import TTkColor
 from TermTk.TTkWidgets.Fancy.tableview import TTkFancyTableView
 
 class TTkFancyTreeView(TTkFancyTableView):
diff --git a/TermTk/TTkWidgets/Fancy/treewidget.py b/TermTk/TTkWidgets/Fancy/treewidget.py
index 624786eb..8d10757a 100644
--- a/TermTk/TTkWidgets/Fancy/treewidget.py
+++ b/TermTk/TTkWidgets/Fancy/treewidget.py
@@ -22,14 +22,11 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from TermTk.TTkCore.cfg import TTkCfg
 from TermTk.TTkCore.constant import TTkK
 from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
-from TermTk.TTkCore.color import TTkColor
 from TermTk.TTkWidgets.widget import TTkWidget
 from TermTk.TTkWidgets.checkbox import TTkCheckbox
-from TermTk.TTkLayouts.gridlayout import TTkGridLayout
 from TermTk.TTkWidgets.Fancy.tableview import TTkFancyTableView
 from TermTk.TTkWidgets.Fancy.treewidgetitem import TTkFancyTreeWidgetItem
 
diff --git a/TermTk/TTkWidgets/Fancy/treewidgetitem.py b/TermTk/TTkWidgets/Fancy/treewidgetitem.py
index 0b2c7cd8..84cbf059 100644
--- a/TermTk/TTkWidgets/Fancy/treewidgetitem.py
+++ b/TermTk/TTkWidgets/Fancy/treewidgetitem.py
@@ -22,10 +22,8 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from TermTk.TTkCore.cfg import TTkCfg
 from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
+from TermTk.TTkCore.signal import pyTTkSignal
 
 class TTkFancyTreeWidgetItem():
     __slots__ = ('_parent', '_data', '_children', '_expand', '_childIndicatorPolicy',
diff --git a/TermTk/TTkWidgets/TTkModelView/__init__.py b/TermTk/TTkWidgets/TTkModelView/__init__.py
index b7dafca5..f37a83a7 100644
--- a/TermTk/TTkWidgets/TTkModelView/__init__.py
+++ b/TermTk/TTkWidgets/TTkModelView/__init__.py
@@ -1,4 +1,3 @@
-
 from .tree                import TTkTree
 from .treewidget          import TTkTreeWidget
 from .treewidgetitem      import TTkTreeWidgetItem
diff --git a/TermTk/TTkWidgets/TTkModelView/filetree.py b/TermTk/TTkWidgets/TTkModelView/filetree.py
index 55f6c232..065bd469 100644
--- a/TermTk/TTkWidgets/TTkModelView/filetree.py
+++ b/TermTk/TTkWidgets/TTkModelView/filetree.py
@@ -22,8 +22,6 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
 from TermTk.TTkWidgets.TTkModelView.tree import TTkTree
 from TermTk.TTkWidgets.TTkModelView.filetreewidget import TTkFileTreeWidget
 
diff --git a/TermTk/TTkWidgets/TTkModelView/filetreewidget.py b/TermTk/TTkWidgets/TTkModelView/filetreewidget.py
index 72e5e162..e1641119 100644
--- a/TermTk/TTkWidgets/TTkModelView/filetreewidget.py
+++ b/TermTk/TTkWidgets/TTkModelView/filetreewidget.py
@@ -23,13 +23,11 @@
 # SOFTWARE.
 
 import os
-import re
 import datetime
 
 from TermTk.TTkCore.color import TTkColor
 
 from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkCore.cfg import TTkCfg
 from TermTk.TTkCore.string import TTkString
 from TermTk.TTkWidgets.TTkModelView.treewidget import TTkTreeWidget
diff --git a/TermTk/TTkWidgets/TTkModelView/filetreewidgetitem.py b/TermTk/TTkWidgets/TTkModelView/filetreewidgetitem.py
index d8488e9a..349e638a 100644
--- a/TermTk/TTkWidgets/TTkModelView/filetreewidgetitem.py
+++ b/TermTk/TTkWidgets/TTkModelView/filetreewidgetitem.py
@@ -24,14 +24,8 @@
 
 import re
 
-from TermTk.TTkCore.color import TTkColor
-
 from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkCore.cfg import TTkCfg
-from TermTk.TTkCore.string import TTkString
 from TermTk.TTkWidgets.TTkModelView.treewidgetitem import TTkTreeWidgetItem
-from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
 
 class TTkFileTreeWidgetItem(TTkTreeWidgetItem):
     FILE = 0x00
diff --git a/TermTk/TTkWidgets/TTkModelView/tree.py b/TermTk/TTkWidgets/TTkModelView/tree.py
index 28f6c1e2..834d5164 100644
--- a/TermTk/TTkWidgets/TTkModelView/tree.py
+++ b/TermTk/TTkWidgets/TTkModelView/tree.py
@@ -23,8 +23,6 @@
 # SOFTWARE.
 
 from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
-from TermTk.TTkWidgets.TTkModelView import treewidget
 from TermTk.TTkWidgets.TTkModelView.treewidget import TTkTreeWidget
 from TermTk.TTkAbstract.abstractscrollarea import TTkAbstractScrollArea
 
diff --git a/TermTk/TTkWidgets/TTkModelView/treewidget.py b/TermTk/TTkWidgets/TTkModelView/treewidget.py
index 7ec2106c..53ee9172 100644
--- a/TermTk/TTkWidgets/TTkModelView/treewidget.py
+++ b/TermTk/TTkWidgets/TTkModelView/treewidget.py
@@ -23,9 +23,7 @@
 # SOFTWARE.
 
 from TermTk.TTkCore.cfg import TTkCfg
-from TermTk.TTkCore.color import TTkColor
 from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkWidgets.TTkModelView.treewidgetitem import TTkTreeWidgetItem
 from TermTk.TTkAbstract.abstractscrollarea import TTkAbstractScrollView
 from TermTk.TTkCore.signal import pyTTkSignal, pyTTkSlot
@@ -181,7 +179,7 @@ class TTkTreeWidget(TTkAbstractScrollView):
             item  = self._cache[y].item
             level = self._cache[y].level
             if level*2 <= x < level*2+3 and \
-               ( item.childIndicatorPolicy() == TTkK.DontShowIndicatorWhenChildless and item.children() or \
+               ( item.childIndicatorPolicy() == TTkK.DontShowIndicatorWhenChildless and item.children() or
                  item.childIndicatorPolicy() == TTkK.ShowIndicator ):
                 item.setExpanded(not item.isExpanded())
                 if item.isExpanded():
@@ -291,7 +289,6 @@ class TTkTreeWidget(TTkAbstractScrollView):
         for i, c in enumerate(self._cache):
             if i-y<0 : continue
             item  = c.item
-            level = c.level
             for il in range(len(self._header)):
                 lx = 0 if il==0 else self._columnsPos[il-1]+1
                 lx1 = self._columnsPos[il]
diff --git a/TermTk/TTkWidgets/TTkModelView/treewidgetitem.py b/TermTk/TTkWidgets/TTkModelView/treewidgetitem.py
index 61ee2628..6b0af244 100644
--- a/TermTk/TTkWidgets/TTkModelView/treewidgetitem.py
+++ b/TermTk/TTkWidgets/TTkModelView/treewidgetitem.py
@@ -24,8 +24,7 @@
 
 from TermTk.TTkCore.cfg import TTkCfg
 from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
+from TermTk.TTkCore.signal import pyTTkSlot
 from TermTk.TTkAbstract.abstractitemmodel import TTkAbstractItemModel
 
 
@@ -40,7 +39,6 @@ class TTkTreeWidgetItem(TTkAbstractItemModel):
     def __init__(self, *args, **kwargs):
         # Signals
         # self.refreshData = pyTTkSignal(TTkTreeWidgetItem)
-        tt = TTkCfg.theme.tree
         super().__init__(*args, **kwargs)
         self._children = []
         self._data = args[0] if len(args)>0 and type(args[0])==list else ['']
@@ -184,6 +182,6 @@ class TTkTreeWidgetItem(TTkAbstractItemModel):
 
     def size(self):
         if self._expanded:
-            return 1 + sum([c.size() for c in self.children()])
+            return 1 + sum(c.size() for c in self.children())
         else:
             return 1
diff --git a/TermTk/TTkWidgets/TTkPickers/colorpicker.py b/TermTk/TTkWidgets/TTkPickers/colorpicker.py
index ebe11a36..80dc2f1b 100644
--- a/TermTk/TTkWidgets/TTkPickers/colorpicker.py
+++ b/TermTk/TTkWidgets/TTkPickers/colorpicker.py
@@ -33,7 +33,6 @@ from TermTk.TTkCore.helper import TTkHelper
 from TermTk.TTkWidgets.widget import TTkWidget
 from TermTk.TTkWidgets.window import TTkWindow
 from TermTk.TTkWidgets.button import TTkButton
-from TermTk.TTkWidgets.frame import TTkFrame
 from TermTk.TTkWidgets.label import TTkLabel
 from TermTk.TTkWidgets.lineedit import TTkLineEdit
 from TermTk.TTkWidgets.spinbox import TTkSpinBox
@@ -61,10 +60,9 @@ class _TTkHueCanvas(TTkWidget):
         self._selected = -1
 
     def mousePressEvent(self, evt):
-        x,y = evt.x, evt.y
-        self._selected = x
-        if x < len(self._hueList):
-            self.colorPicked.emit(self._hueList[x])
+        self._selected = evt.x
+        if evt.x < len(self._hueList):
+            self.colorPicked.emit(self._hueList[evt.x])
         self.update()
         return True
 
@@ -83,7 +81,7 @@ class _TTkHueCanvas(TTkWidget):
                     rgb =a|(b&_linInt(0,b,6*x/w))
                 else:
                     rgb =a|(b&_linInt(b,0,6*x/w))
-                color = TTkColor.bg( "#{:06x}".format(rgb) )
+                color = TTkColor.bg( f"#{rgb:06x}" )
                 if (num*w//6)+x == self._selected:
                     self._canvas.drawChar(pos=((num*w//6)+x,0), char="◼", color=color+TTkColor.fg("#000000"))
                 else:
@@ -144,7 +142,7 @@ class _TTkColorCanvas(TTkWidget):
         w,h = self.size()
         for x in range(w):
             for y in range(h):
-                color = TTkColor.bg( "#{:06x}".format(self._colorAt(x,y,w,h)) )
+                color = TTkColor.bg( f"#{self._colorAt(x,y,w,h):06x}" )
                 if (x,y)==self._selected:
                     self._canvas.drawText(pos=(x,y), text="◼", color=color+TTkColor.fg("#000000"))
                 else:
@@ -158,7 +156,7 @@ class _TTkShowColor(TTkWidget,TColor):
 
     @pyTTkSlot(int)
     def setRGBColor(self, color):
-        self.color = TTkColor.bg( "#{:06x}".format(color) )
+        self.color = TTkColor.bg( f"#{color:06x}" )
         self.update()
 
     @pyTTkSlot(TTkColor)
@@ -296,7 +294,7 @@ class TTkColorDialogPicker(TTkWindow,TColor):
             leR.setValue((color&0xff0000)>>16)
             leG.setValue((color&0x00ff00)>> 8)
             leB.setValue((color&0x0000ff)>> 0)
-            leHTML.setText("#{:06X}".format(color))
+            leHTML.setText(f"#{color:06X}")
 
         @pyTTkSlot(TTkColor)
         def _controlSetColor(color):
diff --git a/TermTk/TTkWidgets/TTkPickers/filepicker.py b/TermTk/TTkWidgets/TTkPickers/filepicker.py
index efcf4b94..cddd4598 100644
--- a/TermTk/TTkWidgets/TTkPickers/filepicker.py
+++ b/TermTk/TTkWidgets/TTkPickers/filepicker.py
@@ -28,7 +28,6 @@ import re
 from TermTk.TTkCore.color import TTkColor
 
 from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkCore.cfg import TTkCfg
 from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
 from TermTk.TTkCore.string import TTkString
@@ -113,7 +112,7 @@ class TTkFileDialogPicker(TTkWindow):
         self._btnCancel = TTkButton(text="Cancel",maxWidth=8)
 
         for f in self._filters.split(';;'):
-            if m := re.match(".*\(.*\)",f):
+            if re.match(".*\(.*\)",f):
                 self._fileType.addItem(f)
         self._fileType.setCurrentIndex(0)
         self._fileType.currentTextChanged.connect(self._fileTypeChanged)
@@ -263,5 +262,6 @@ class TTkFileDialogPicker(TTkWindow):
                 break
         return ret
 class TTkFileDialog:
+    @staticmethod
     def getOpenFileName(caption, dir=".", filter="All Files (*)", options=None):
         pass
\ No newline at end of file
diff --git a/TermTk/TTkWidgets/about.py b/TermTk/TTkWidgets/about.py
index 09d95568..ce9201f8 100644
--- a/TermTk/TTkWidgets/about.py
+++ b/TermTk/TTkWidgets/about.py
@@ -22,10 +22,8 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkCore.cfg import TTkCfg
 from TermTk.TTkCore.color import TTkColor
-from TermTk.TTkCore.string import TTkString
 from TermTk.TTkWidgets.window import TTkWindow
 from TermTk.TTkWidgets.image import TTkImage
 
@@ -76,7 +74,7 @@ class TTkAbout(TTkWindow):
             self._canvas.drawText(pos=(9,3+y),text=line, color=TTkColor.fg(f'#{c[0]:02X}{c[1]:02X}{c[2]:02X}'))
             c[2]-=0x11
         self._canvas.drawText(pos=(20,9),text=f"  Version: {TTkCfg.version}", color=TTkColor.fg('#AAAAFF'))
-        self._canvas.drawText(pos=(12,11),text=f"Powered By, Eugenio Parodi")
-        self._canvas.drawText(pos=(2,13),text=f"https://github.com/ceccopierangiolieugenio/pyTermTk", color=TTkColor.fg('#44FFFF'))
+        self._canvas.drawText(pos=(12,11),text="Powered By, Eugenio Parodi")
+        self._canvas.drawText(pos=(2,13),text="https://github.com/ceccopierangiolieugenio/pyTermTk", color=TTkColor.fg('#44FFFF'))
 
         TTkWindow.paintEvent(self)
diff --git a/TermTk/TTkWidgets/button.py b/TermTk/TTkWidgets/button.py
index 4c54dc37..1d9fb8f8 100644
--- a/TermTk/TTkWidgets/button.py
+++ b/TermTk/TTkWidgets/button.py
@@ -23,9 +23,7 @@
 # SOFTWARE.
 
 from TermTk.TTkCore.cfg import TTkCfg
-from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
-from TermTk.TTkCore.color import TTkColor
+from TermTk.TTkCore.signal import pyTTkSignal
 from TermTk.TTkWidgets.widget import *
 
 class TTkButton(TTkWidget):
diff --git a/TermTk/TTkWidgets/checkbox.py b/TermTk/TTkWidgets/checkbox.py
index 4de70d67..7b8ce785 100644
--- a/TermTk/TTkWidgets/checkbox.py
+++ b/TermTk/TTkWidgets/checkbox.py
@@ -23,9 +23,7 @@
 # SOFTWARE.
 
 from TermTk.TTkCore.cfg import TTkCfg
-from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
-from TermTk.TTkCore.color import TTkColor
+from TermTk.TTkCore.signal import pyTTkSignal
 from TermTk.TTkWidgets.widget import *
 
 class TTkCheckbox(TTkWidget):
diff --git a/TermTk/TTkWidgets/combobox.py b/TermTk/TTkWidgets/combobox.py
index 5a0b033b..3479bd92 100644
--- a/TermTk/TTkWidgets/combobox.py
+++ b/TermTk/TTkWidgets/combobox.py
@@ -26,11 +26,9 @@ from TermTk.TTkCore.cfg import TTkCfg
 from TermTk.TTkCore.constant import TTkK
 from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
-from TermTk.TTkCore.color import TTkColor
 from TermTk.TTkCore.helper import TTkHelper
 from TermTk.TTkLayouts.gridlayout import TTkGridLayout
 from TermTk.TTkWidgets.widget import TTkWidget
-from TermTk.TTkWidgets.button import TTkButton
 from TermTk.TTkWidgets.list_ import TTkList
 from TermTk.TTkWidgets.lineedit import TTkLineEdit
 from TermTk.TTkWidgets.resizableframe import TTkResizableFrame
diff --git a/TermTk/TTkWidgets/frame.py b/TermTk/TTkWidgets/frame.py
index c611e7d8..ca397dc9 100644
--- a/TermTk/TTkWidgets/frame.py
+++ b/TermTk/TTkWidgets/frame.py
@@ -23,8 +23,6 @@
 # SOFTWARE.
 
 from TermTk.TTkCore.cfg import *
-from TermTk.TTkCore.helper import TTkHelper
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkWidgets.widget import TTkWidget
 from TermTk.TTkWidgets.menubar import TTkMenuLayout
 
diff --git a/TermTk/TTkWidgets/graph.py b/TermTk/TTkWidgets/graph.py
index 7e3c3cbe..339277eb 100644
--- a/TermTk/TTkWidgets/graph.py
+++ b/TermTk/TTkWidgets/graph.py
@@ -29,7 +29,6 @@
 
 from TermTk.TTkCore.cfg import *
 from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkWidgets.widget import TTkWidget
 from TermTk.TTkTemplates.color import TColor
 
diff --git a/TermTk/TTkWidgets/image.py b/TermTk/TTkWidgets/image.py
index 02f3c409..dad03d81 100644
--- a/TermTk/TTkWidgets/image.py
+++ b/TermTk/TTkWidgets/image.py
@@ -22,7 +22,6 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkCore.color import TTkColor
 from TermTk.TTkCore.string import TTkString
 from TermTk.TTkWidgets.widget import TTkWidget
@@ -34,7 +33,7 @@ class TTkImage(TTkWidget):
         self._name = kwargs.get('name' , 'TTkImage' )
         self._data = kwargs.get('data' , [] )
         if self._data:
-            w = min([len(i) for i in self._data])
+            w = min(len(i) for i in self._data)
             h = len(self._data)
             self.resize(w//2,h//2)
 
@@ -42,7 +41,7 @@ class TTkImage(TTkWidget):
         # quadblitter notcurses like
         l = (a,b,c,d)
         def delta(i):
-            return max([v[i] for v in l]) - min([v[i] for v in l])
+            return max(v[i] for v in l) - min(v[i] for v in l)
         deltaR = delta(0)
         deltaG = delta(1)
         deltaB = delta(2)
@@ -87,7 +86,7 @@ class TTkImage(TTkWidget):
                      '▄', '▙', '▟', '█']
 
             return  TTkString() + \
-                    (TTkColor.bg(f'#{c1[0]:02X}{c1[1]:02X}{c1[2]:02X}') + \
+                    (TTkColor.bg(f'#{c1[0]:02X}{c1[1]:02X}{c1[2]:02X}') +
                      TTkColor.fg(f'#{c2[0]:02X}{c2[1]:02X}{c2[2]:02X}')) + \
                     quad[ch]
 
@@ -172,8 +171,8 @@ class TTkImage(TTkWidget):
         img = self._data
         for y in range(0, len(img)&(~1), 2):
             for x in range(0, min(len(img[y])&(~1),len(img[y+1])&(~1)), 2):
-                self._canvas.drawText( \
-                        pos=(x//2,y//2), \
+                self._canvas.drawText(
+                        pos=(x//2,y//2),
                         text=self._reduce(
                                     img[y][x]   , img[y][x+1]   ,
                                     img[y+1][x] , img[y+1][x+1] ))
diff --git a/TermTk/TTkWidgets/label.py b/TermTk/TTkWidgets/label.py
index 38431b71..b842e5e6 100644
--- a/TermTk/TTkWidgets/label.py
+++ b/TermTk/TTkWidgets/label.py
@@ -23,7 +23,6 @@
 # SOFTWARE.
 
 from TermTk.TTkCore.color import TTkColor
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkWidgets.widget import *
 from TermTk.TTkTemplates.color import TColor
 from TermTk.TTkTemplates.text  import TText
diff --git a/TermTk/TTkWidgets/lineedit.py b/TermTk/TTkWidgets/lineedit.py
index 14270c6f..4b98235f 100644
--- a/TermTk/TTkWidgets/lineedit.py
+++ b/TermTk/TTkWidgets/lineedit.py
@@ -25,7 +25,6 @@
 import re
 
 from TermTk.TTkCore.cfg import TTkCfg
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkCore.helper import TTkHelper
 from TermTk.TTkCore.string import TTkString
 from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
@@ -164,7 +163,6 @@ class TTkLineEdit(TTkWidget):
         return True
 
     def keyEvent(self, evt):
-        w = self.width()
         baseText = self._text
         if evt.type == TTkK.SpecialKey:
             # Don't Handle the special tab key
diff --git a/TermTk/TTkWidgets/list_.py b/TermTk/TTkWidgets/list_.py
index b6eae5e9..43ea1f2c 100644
--- a/TermTk/TTkWidgets/list_.py
+++ b/TermTk/TTkWidgets/list_.py
@@ -22,10 +22,6 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from TermTk.TTkCore.cfg import TTkCfg
-from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
 from TermTk.TTkWidgets.listwidget import TTkListWidget
 from TermTk.TTkAbstract.abstractscrollarea import TTkAbstractScrollArea
 
diff --git a/TermTk/TTkWidgets/menubar.py b/TermTk/TTkWidgets/menubar.py
index ad39b7a8..9f34a7ec 100644
--- a/TermTk/TTkWidgets/menubar.py
+++ b/TermTk/TTkWidgets/menubar.py
@@ -26,7 +26,6 @@ from TermTk.TTkCore.cfg import *
 from TermTk.TTkCore.helper import TTkHelper
 from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkCore.signal import pyTTkSignal, pyTTkSlot
-from TermTk.TTkWidgets.widget import TTkWidget
 from TermTk.TTkWidgets.button import TTkButton
 from TermTk.TTkWidgets.listwidget import TTkListWidget, TTkAbstractListItem
 from TermTk.TTkLayouts.layout import TTkLayout
diff --git a/TermTk/TTkWidgets/radiobutton.py b/TermTk/TTkWidgets/radiobutton.py
index 61a47127..2150fe35 100644
--- a/TermTk/TTkWidgets/radiobutton.py
+++ b/TermTk/TTkWidgets/radiobutton.py
@@ -23,9 +23,7 @@
 # SOFTWARE.
 
 from TermTk.TTkCore.cfg import TTkCfg
-from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
-from TermTk.TTkCore.color import TTkColor
+from TermTk.TTkCore.signal import pyTTkSignal
 from TermTk.TTkWidgets.widget import *
 
 class TTkRadioButton(TTkWidget):
diff --git a/TermTk/TTkWidgets/resizableframe.py b/TermTk/TTkWidgets/resizableframe.py
index 7e10f97a..35be48e6 100644
--- a/TermTk/TTkWidgets/resizableframe.py
+++ b/TermTk/TTkWidgets/resizableframe.py
@@ -23,7 +23,6 @@
 # SOFTWARE.
 
 from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkWidgets.frame import TTkFrame
 
 class TTkResizableFrame(TTkFrame):
diff --git a/TermTk/TTkWidgets/scrollarea.py b/TermTk/TTkWidgets/scrollarea.py
index 442e81e1..aa052a22 100644
--- a/TermTk/TTkWidgets/scrollarea.py
+++ b/TermTk/TTkWidgets/scrollarea.py
@@ -22,9 +22,8 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkCore.constant import TTkConstant, TTkK
-from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
+from TermTk.TTkCore.constant import TTkK
+from TermTk.TTkCore.signal import pyTTkSlot
 from TermTk.TTkAbstract.abstractscrollarea import TTkAbstractScrollArea
 from TermTk.TTkAbstract.abstractscrollview import TTkAbstractScrollView
 
diff --git a/TermTk/TTkWidgets/scrollbar.py b/TermTk/TTkWidgets/scrollbar.py
index b82e236d..5e8c9737 100644
--- a/TermTk/TTkWidgets/scrollbar.py
+++ b/TermTk/TTkWidgets/scrollbar.py
@@ -23,7 +23,6 @@
 # SOFTWARE.
 
 from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
 from TermTk.TTkCore.color import TTkColor
 from TermTk.TTkWidgets.widget import TTkWidget
@@ -218,7 +217,7 @@ class TTkScrollBar(TTkWidget):
 
     @property
     def maximum(self): return self._maximum
-    @minimum.setter
+    @maximum.setter
     def maximum(self, v):
         if v == self._maximum:
             return
diff --git a/TermTk/TTkWidgets/spacer.py b/TermTk/TTkWidgets/spacer.py
index 182fb919..aa95a0e1 100644
--- a/TermTk/TTkWidgets/spacer.py
+++ b/TermTk/TTkWidgets/spacer.py
@@ -22,7 +22,6 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkWidgets.widget import TTkWidget
 
 class TTkSpacer(TTkWidget):
diff --git a/TermTk/TTkWidgets/spinbox.py b/TermTk/TTkWidgets/spinbox.py
index cb3a399d..e73d9596 100644
--- a/TermTk/TTkWidgets/spinbox.py
+++ b/TermTk/TTkWidgets/spinbox.py
@@ -23,11 +23,7 @@
 # SOFTWARE.
 
 from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.cfg import TTkCfg
-from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkCore.helper import TTkHelper
 from TermTk.TTkCore.signal import pyTTkSlot, pyTTkSignal
-from TermTk.TTkCore.color import TTkColor
 from TermTk.TTkLayouts import TTkGridLayout
 from TermTk.TTkWidgets.widget import TTkWidget
 from TermTk.TTkWidgets.lineedit import TTkLineEdit
diff --git a/TermTk/TTkWidgets/splitter.py b/TermTk/TTkWidgets/splitter.py
index 1fe2ae19..590f1fad 100644
--- a/TermTk/TTkWidgets/splitter.py
+++ b/TermTk/TTkWidgets/splitter.py
@@ -23,8 +23,6 @@
 # SOFTWARE.
 
 from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.log import TTkLog
-from TermTk.TTkCore.color import TTkColor
 from TermTk.TTkWidgets.widget import *
 from TermTk.TTkWidgets.frame import *
 
diff --git a/TermTk/TTkWidgets/tabwidget.py b/TermTk/TTkWidgets/tabwidget.py
index c4d41e74..18d5b0ea 100644
--- a/TermTk/TTkWidgets/tabwidget.py
+++ b/TermTk/TTkWidgets/tabwidget.py
@@ -22,7 +22,7 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from TermTk.TTkCore.constant import TTkConstant, TTkK
+from TermTk.TTkCore.constant import  TTkK
 from TermTk.TTkCore.helper import TTkHelper
 from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkCore.cfg import *
@@ -134,11 +134,11 @@ class _TTkTabMenuButton(TTkMenuButton):
         if self._pressed:
             borderColor = self._borderColor
             textColor   = TTkCfg.theme.menuButtonColorClicked
-            scColor     = TTkCfg.theme.menuButtonShortcutColor
+            # scColor     = TTkCfg.theme.menuButtonShortcutColor
         else:
             borderColor = self._borderColor
             textColor   = self._color
-            scColor     =  TTkCfg.theme.menuButtonShortcutColor
+            # scColor     =  TTkCfg.theme.menuButtonShortcutColor
         text = TTkString('[',borderColor) + TTkString(self.text,textColor) + TTkString(']',borderColor)
         self._canvas.drawText(pos=(0,0),text=text)
 
diff --git a/TermTk/TTkWidgets/texedit.py b/TermTk/TTkWidgets/texedit.py
index bd79f728..f93673a0 100644
--- a/TermTk/TTkWidgets/texedit.py
+++ b/TermTk/TTkWidgets/texedit.py
@@ -22,12 +22,8 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkWidgets.widget import *
-from TermTk.TTkLayouts.gridlayout import TTkGridLayout
-from TermTk.TTkCore.color import TTkColor
 from TermTk.TTkCore.string import TTkString
-from TermTk.TTkWidgets.scrollbar import TTkScrollBar
 from TermTk.TTkAbstract.abstractscrollarea import TTkAbstractScrollArea
 from TermTk.TTkAbstract.abstractscrollview import TTkAbstractScrollView
 
@@ -158,7 +154,7 @@ class _TTkTextEditView(TTkAbstractScrollView):
         return super().resizeEvent(w,h)
 
     def _updateSize(self):
-        self._hsize = max( [ len(l) for l in self._dataLines ] )
+        self._hsize = max(  len(l) for l in self._dataLines  )
 
     def viewFullAreaSize(self) -> (int, int):
         if self._lineWrapMode == TTkK.NoWrap:
diff --git a/TermTk/TTkWidgets/window.py b/TermTk/TTkWidgets/window.py
index dac955a6..4b358d50 100644
--- a/TermTk/TTkWidgets/window.py
+++ b/TermTk/TTkWidgets/window.py
@@ -24,10 +24,8 @@
 
 from TermTk.TTkCore.cfg import TTkCfg
 from TermTk.TTkCore.constant import TTkK
-from TermTk.TTkCore.log import TTkLog
 from TermTk.TTkCore.color import TTkColor
 from TermTk.TTkWidgets.resizableframe import TTkResizableFrame
-from TermTk.TTkWidgets.widget import TTkWidget
 
 
 class TTkWindow(TTkResizableFrame):