[{'date': '2010-04-01', 'people': 1047, 'hits': 4522}, {'date': '2010-04-03', 'people': 617, 'hits': 2582}, {'date': '2010-04-02', 'people': 736, 'hits': 3277}]
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假设我有这个清单.如何按"日期"排序,这是字典中的项目.但是,"日期"是一个字符串......