--- a/controls/ProjectPropertiesPanel.py	Tue Aug 15 22:38:43 2017 +0300
+++ b/controls/ProjectPropertiesPanel.py	Wed Aug 16 11:47:27 2017 +0300
@@ -52,7 +52,7 @@
 
             st = wx.StaticText(parent, label=label)
             sizer.AddWindow(st, border=10,
-                  flag=wx.ALIGN_CENTER_VERTICAL|border|wx.LEFT)
+                  flag=wx.ALIGN_CENTER_VERTICAL | border | wx.LEFT)
 
             tc = wx.TextCtrl(parent, style=wx.TE_PROCESS_ENTER)
             setattr(self, name, tc)
@@ -60,7 +60,7 @@
             self.Bind(wx.EVT_TEXT_ENTER, callback, tc)
             tc.Bind(wx.EVT_KILL_FOCUS, callback)
             sizer.AddWindow(tc, border=10,
-                  flag=wx.GROW|border|wx.RIGHT)
+                  flag=wx.GROW | border | wx.RIGHT)
 
     def __init__(self, parent, controller=None, window=None, enable_required=True):
         wx.Notebook.__init__(self, parent)
@@ -111,18 +111,18 @@
         pageSize_st = wx.StaticText(self.GraphicsPanel,
               label=_('Page Size (optional):'))
         graphicpanel_sizer.AddWindow(pageSize_st, border=10,
-              flag=wx.ALIGN_CENTER_VERTICAL|wx.TOP|wx.LEFT|wx.RIGHT)
+              flag=wx.ALIGN_CENTER_VERTICAL | wx.TOP | wx.LEFT | wx.RIGHT)
 
         pageSize_sizer = wx.FlexGridSizer(cols=2, hgap=5, rows=2, vgap=5)
         pageSize_sizer.AddGrowableCol(1)
         graphicpanel_sizer.AddSizer(pageSize_sizer, border=10,
-              flag=wx.GROW|wx.LEFT|wx.RIGHT)
+              flag=wx.GROW | wx.LEFT | wx.RIGHT)
 
         for name, label in [('PageWidth', _('Width:')),
                             ('PageHeight', _('Height:'))]:
             st = wx.StaticText(self.GraphicsPanel, label=label)
             pageSize_sizer.AddWindow(st, border=12,
-                  flag=wx.ALIGN_CENTER_VERTICAL|wx.LEFT)
+                  flag=wx.ALIGN_CENTER_VERTICAL | wx.LEFT)
 
             sp = wx.SpinCtrl(self.GraphicsPanel,
                   min=0, max=2**16, style=wx.TE_PROCESS_ENTER)
@@ -135,11 +135,11 @@
         scaling_st = wx.StaticText(self.GraphicsPanel,
               label=_('Grid Resolution:'))
         graphicpanel_sizer.AddWindow(scaling_st, border=10,
-              flag=wx.GROW|wx.LEFT|wx.RIGHT)
+              flag=wx.GROW | wx.LEFT | wx.RIGHT)
 
         scaling_nb = wx.Notebook(self.GraphicsPanel)
         graphicpanel_sizer.AddWindow(scaling_nb, border=10,
-              flag=wx.GROW|wx.BOTTOM|wx.LEFT|wx.RIGHT)
+              flag=wx.GROW | wx.BOTTOM | wx.LEFT | wx.RIGHT)
 
         self.Scalings = {}
         for language, translation in [("FBD", _("FBD")), ("LD", _("LD")), ("SFC", _("SFC"))]:
@@ -158,7 +158,7 @@
 
                 st = wx.StaticText(scaling_panel, label=label)
                 scalingpanel_sizer.AddWindow(st, border=10,
-                      flag=wx.ALIGN_CENTER_VERTICAL|border|wx.LEFT)
+                      flag=wx.ALIGN_CENTER_VERTICAL | border | wx.LEFT)
 
                 sp = wx.SpinCtrl(scaling_panel,
                       min=0, max=2**16, style=wx.TE_PROCESS_ENTER)
@@ -167,7 +167,7 @@
                 self.Bind(wx.EVT_TEXT_ENTER, callback, sp)
                 sp.Bind(wx.EVT_KILL_FOCUS, callback)
                 scalingpanel_sizer.AddWindow(sp, border=10,
-                      flag=wx.GROW|border|wx.RIGHT)
+                      flag=wx.GROW | border | wx.RIGHT)
 
             self.Scalings[language] = scaling_controls
             scaling_nb.AddPage(scaling_panel, translation)
@@ -187,27 +187,27 @@
         language_label = wx.StaticText(self.MiscellaneousPanel,
               label=_('Language (optional):'))
         miscellaneouspanel_sizer.AddWindow(language_label, border=10,
-              flag=wx.ALIGN_CENTER_VERTICAL|wx.TOP|wx.LEFT)
+              flag=wx.ALIGN_CENTER_VERTICAL | wx.TOP | wx.LEFT)
 
         self.Language = wx.ComboBox(self.MiscellaneousPanel,
               style=wx.CB_READONLY)
         self.Bind(wx.EVT_COMBOBOX, self.OnLanguageChanged, self.Language)
         miscellaneouspanel_sizer.AddWindow(self.Language, border=10,
-              flag=wx.GROW|wx.TOP|wx.RIGHT)
+              flag=wx.GROW | wx.TOP | wx.RIGHT)
 
         description_label = wx.StaticText(self.MiscellaneousPanel,
               label=_('Content Description (optional):'))
         miscellaneouspanel_sizer.AddWindow(description_label, border=10,
-              flag=wx.BOTTOM|wx.LEFT)
+              flag=wx.BOTTOM | wx.LEFT)
 
         self.ContentDescription = wx.TextCtrl(self.MiscellaneousPanel,
-              size=wx.Size(240, 150), style=wx.TE_MULTILINE|wx.TE_PROCESS_ENTER)
+              size=wx.Size(240, 150), style=wx.TE_MULTILINE | wx.TE_PROCESS_ENTER)
         self.Bind(wx.EVT_TEXT_ENTER, self.OnContentDescriptionChanged,
               self.ContentDescription)
         self.ContentDescription.Bind(wx.EVT_KILL_FOCUS,
               self.OnContentDescriptionChanged)
         miscellaneouspanel_sizer.AddWindow(self.ContentDescription, border=10,
-              flag=wx.GROW|wx.BOTTOM|wx.RIGHT)
+              flag=wx.GROW | wx.BOTTOM | wx.RIGHT)
 
         self.AddPage(self.MiscellaneousPanel, _("Miscellaneous"))