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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 namespace(self, key, glob=False):
 """Return a namespace for keyring"""

        if not self.name:
            self.name = os.environ['DJANGO_SETTINGS_MODULE'] 
        ns = '.'.join([key, self._glob]) if glob else '.'.join([self.name, self._glob])
        return ns