Python中括号的不同含义 [英] Different meanings of brackets in Python

问题描述

我很好奇，Python 编程中 3 个不同的括号是什么意思?不确定我是否正确，但如果我错了，请纠正我:

I am curious, what do the 3 different brackets mean in Python programming? Not sure if I'm correct about this, but please correct me if I'm wrong:

[] - # Normally used for dictionaries, list items
() - # Used to identify params
{} - # I have no idea what this does... 

或者如果这些括号可以用于其他目的，欢迎任何建议！谢谢！

Or if these brackets can be used for other purposes, any advice is welcomed! Thanks!

推荐答案

• []:用于定义可变数据类型 - 列表、列表推导式以及用于索引/查找/切片.
• ():定义元组、操作顺序、生成器表达式、函数调用和其他语法.
• {}:两种哈希表类型 - 字典和集合.
• []: Used to define mutable data types - lists, list comprehensions and for indexing/lookup/slicing.
• (): Define tuples, order of operations, generator expressions, function calls and other syntax.
• {}: The two hash table types - dictionaries and sets.

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