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Python 中 new 和 init 到底谁才是构造函数?一文讲透区别与 5 个坑

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先给结论:__new__ 才是真正的构造函数,它负责"造出"对象;__init__ 只是初始化函数,它拿到的是已经造好的对象,往里填属性。很多人写了几年 Python,一直把 __init__ 当成

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Provider: 掘金
Source: juejin-rss
Score: 57.36
Confidence: 54%

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JuejinObserved: Oct 2, 2026Source reliability: 60%
Python 中 __new__ 和 __init__ 到底谁才是构造函数?一文讲透区别与 5 个坑. 先给结论:__new__ 才是真正的构造函数,它负责"造出"对象;__init__ 只是初始化函数,它拿到的是已经造好的对象,往里填属性。很多人写了几年 Python,一直把 __init__ 当成
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Python 中 new 和 init 到底谁才是构造函数?一文讲透区别与 5 个坑

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