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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 item(self, name, fuzzy_threshold=100):
 """ Extract a password from an unlocked Keychain using fuzzy matching. ``fuzzy_threshold`` can be an integer between 0 and 100, where 100 is an exact match. """

        match = process.extractOne(
            name,
            self._items.keys(),
            score_cutoff=(fuzzy_threshold-1),
        )
        if match:
            exact_name = match[0]
            item = self._items[exact_name]
            item.decrypt_with(self)
            return item
        else:
            return None