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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_global(self):
 """Clear only any cached global data. """

        vname = self.varname
        logger.debug(f'global clearning {vname}')
        if vname in globals():
            logger.debug('removing global instance var: {}'.format(vname))
            del globals()[vname]