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3 yrs

https://blog.csdn.net/sinat_28....576553/article/detai

Python字典(Dictionary)操作全解【创建、读取、修改、添加、删除、有序字典、浅复制、排序】_THEAQING的博客-CSDN博客_python字典操作
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Python字典(Dictionary)操作全解【创建、读取、修改、添加、删除、有序字典、浅复制、排序】_THEAQING的博客-CSDN博客_python字典操作

字典是“键-值”对的无序可变序列,字典中的每个元素可以分为两部分,“键”和“值”。定义字典时,每个元素的“键”和“值”用冒号分隔,相邻元素之间用逗号分隔,所有元素放在一对大括号”{“和”}“中。字典中的“键”可以是Python中任意不可变数据,例如整数,实数,复数,字符串,元组等等,但不能使用列表、集合、字典作为字典的“键”,因为这些对象是可变的。另外,字典中的“键”不允许重复,而值是可以重复的...
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