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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 formatted_ghost_file(self):
 """ Returns a properly formatted ghost file name. :returns: formatted ghost_file name (string) """


        # replace specials characters in 'drive:\filename' in Linux and Dynamips in MS Windows or viceversa.
        ghost_file = "{}-{}.ghost".format(os.path.basename(self._image), self._ram)
        ghost_file = ghost_file.replace('\\', '-').replace('/', '-').replace(':', '-')
        return ghost_file