def __delitem__(self, key):
return self.pop(key)<EOL>
>>> cache = Cache(log_level=logging.WARNING)
>>> cache.put('a', 0)
>>> cache.put('b', 1)
>>> del cache['a']
>>> cache.get('a') == None
True
>>> cache.get('b')
1
>>> del cache['b']
>>> cache.get('b') == None
True