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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 _fromGUI(self, value):
 """ Conversion function used in getting the value of the control. """


        # One or more of the underlying text control implementations
        # issue an intermediate EVT_TEXT when replacing the control's
        # value, where the intermediate value is an empty string.
        # So, to ensure consistency and to prevent spurious ValueErrors,
        # we make the following test, and react accordingly:
        #
        if value == '':
            if not self.IsNoneAllowed():
                return 0
            else:
                return
        else:
            try:
                return int(value)
            except ValueError:
                if self.IsLongAllowed():
                    try:
                        return long(value)
                    except ValueError:
                        wx.TextCtrl.SetValue(self, "0")
                        return 0
                else:
                    raise