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鱼ManBetX论坛»论坛 技术交流 Python交流 ManBetXookbook 1.19
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[技术交流] ManBetXookbook 1.19

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发表于 2022-1-20 22:42:10 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式

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同时对数据做转换和换算

问题描述:
        使用一些运算函数之前,要对数据进行整理筛选

生成器首选,节省空间提高效率
  1. datas = [{"name": "小明", "age": 18}, {
  2.     "name": "小黄", "age": 8}, {"name": "小蓝", "age": 15}]

  3. print(max(x["age"] for x in datas))
  4. print(max(datas, key=lambda s: s["age"]))
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18
{'name': '小明', 'age': 18}

前边生成器输出的是值
后面的是一整个项

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