Tool.tbl error

def save(self,widget):
        if self.toolfile == None:return
        file = open(self.toolfile, "w")
        #print self.toolfile
        liststore = self.model
        locale.setlocale(locale.LC_ALL, 'en_US.utf8')
        for row in liststore:
            values = [ value for value in row ]
            #print values
            line = ""
            for num,i in enumerate(values):
                if num == 0: continue
                elif num in (1,2): # tool# pocket#
                    line = line + "%s%d "%(KEYWORDS[num], i)
                    print "1,2"
                elif num == 16: # comments
                    test = i.strip()
                    line = line + "%s%s "%(KEYWORDS[num],test)
                else:
                    test = i.lstrip() # localized floats
                    line = line + "%s%s "%(KEYWORDS[num], locale.atof(test))

            print >>file,line
        # Theses lines are required to make sure the OS doesn't cache the data
        # That would make linuxcnc and the widget to be out of synch leading to odd errors
        file.flush()
        os.fsync(file.fileno())
        # tell linuxcnc we changed the tool table entries
        try:
            linuxcnc.command().load_tool_table()
        except:
            print "Reloading tooltable into linuxcnc failed"

        # This is for changing the display after tool editor was loaded using the style button
        # note that it toggles the display