__str__ 和 __repr__ 不是 Python 里最难理解的魔法方法，但却是最容易被忽视的。 你也许打印过对象，如下： class Student: def __init__(self, name, age): self.name = name self.age = age s = Student("小明", 18) print(s) # <__main__.Student object ...

Python dataclasses work behind the scenes to make your Python classes less verbose and more powerful all at once. Here's an introduction to using dataclasses in Python. Everything in Python is an ...

Community driven content discussing all aspects of software development from DevOps to design patterns. A simple application that prints nothing more than the words Hello World is the seminal start to ...

Design patterns have evolved to address problems that are often encountered in software applications. They are solutions to recurring problems and complexities in software design. We’ve discussed many ...

In Python, we have a way to represent our objects within interpreters: repr. In IPython, it goes even further. We can register rich represenations of plots, tables, and all kinds of objects. As an ...

我们都知道，Python的内置函数 repr() 能够把对象用字符串的形式表达出来，方便我们辨认。这就是“字符串表示形式”。repr() 就是通过 __repr__ 这个特殊方法来得到一个对象的字符串表示形式的。 我们都知道，Python的内置函数 repr() 能够把对象用字符串的 ...

We instantiate the literals using the literal constructor, but the repr is the specific literal. I think we just want to use the literal constructor in the repr as ...