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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 clear(self):
 """Clear the data, and thus, force it to be created on the next fetch. This is done by removing the attribute from ``owner``, deleting it from globals and removing the file from the disk. """

        vname = self.varname
        if self.path.exists():
            logger.debug('deleting cached work: {}'.format(self.path))
            self.path.unlink()
        if self.owner is not None and hasattr(self.owner, vname):
            logger.debug('removing instance var: {}'.format(vname))
            delattr(self.owner, vname)
        self.clear_global()