Return a new dictionary initialized from an optional positional argument or from a set of keyword arguments.
返回一个新的由可选的位置参数或一组关键字参数初始化的字典。
Otherwise, the positional argument must be a sequence, a container that supports iteration, or an iterator object.
如果位置参数是一个映射对象,则返回像映射对象一样的键值映射。
Provide a read-only property with the same name as each positional argument, but change the case to differentiate between them.
提供和每个位置性引数同名的唯读属性,但变更大小写以区分它们。
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