最接近的等效项可能类似于以下内容：
import collectionsdef hasher(): return collections.defaultdict(hasher)hash = hasher()hash['element1']['sub1']['subsub1'] = 'value1'if 'subsub1' in hash['element1']['sub1']: print 'found value'
最接近的等效项可能类似于以下内容：
import collectionsdef hasher(): return collections.defaultdict(hasher)hash = hasher()hash['element1']['sub1']['subsub1'] = 'value1'if 'subsub1' in hash['element1']['sub1']: print 'found value'
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