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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _create_penwidth_combo(self):
 """Create pen width combo box"""


        choices = map(unicode, xrange(12))
        self.pen_width_combo = \
            _widgets.PenWidthComboBox(self, choices=choices,
                                      style=wx.CB_READONLY, size=(50, -1))

        self.pen_width_combo.SetToolTipString(_(u"Border width"))
        self.AddControl(self.pen_width_combo)
        self.Bind(wx.EVT_COMBOBOX, self.OnLineWidth, self.pen_width_combo)