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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 detectBlackBerryTouch(self):
 """Return detection of a Blackberry touchscreen device Detects if the current browser is a BlackBerry Touch device, such as the Storm, Torch, and Bold Touch. Excludes the Playbook. """

        return UAgentInfo.deviceBBStorm in self.__userAgent \
                or UAgentInfo.deviceBBTorch in self.__userAgent \
                or UAgentInfo.deviceBBBoldTouch in self.__userAgent \
                or UAgentInfo.deviceBBCurveTouch in self.__userAgent