Python 2 allows classes that don't inherit from object, which was added in version 2.2. They behave differently from "new-style classes" in a few ways, and you've found a couple. They behave differently from "new-style classes" in a few ways, and you've found a couple.

Python is not a language built for Object Oriented Programming, unlike Java or C++. First off, methods belong to either an entire class (static method) or an object (instance) of the class (object method). When calling a static method in Python, one simply writes a method with regular arguments inside it.

2017年7月8日 · Yep, you are right, these are oop constructs. __init__ is the constructor for a class. The self parameter refers to the instance of the object (like this in C++).

2009年2月23日 · Just a heads up... with Python 2.7, and I believe ever since super() was introduced in version 2.2, you can only call super() if one of the parents inherit from a class that eventually inherits object (new-style classes). Personally, as for python 2.7 code, I'm going to continue using BaseClassName.__init__(self, args) until I actually get the ...

2009年2月16日 · The class definitions of the boto classes I am using contain class variables for Manager, which in turn serve as a default value if no Manager is passed to the __init__() of these classes. I didn't even think about the fact that these class variables would be evaluated with the import statement when importing the modules containing these classes.

2015年10月12日 · Classes are the pillar of Object Oriented Programming. OOP is highly concerned with code organization, reusability, and encapsulation. First, a disclaimer: OOP is partially in contrast to Functional Programming, which is a different paradigm used a lot in Python. Not everyone who programs in Python (or surely most languages) uses OOP.

2022年7月15日 · Python classes explained. 0. Class and objects in Python. 2. Understanding Python Class and Object. 1 ...

2008年11月30日 · In Python is there any way to make a class, then make a second version of that class with identical dat,a but which can be changed, then reverted to be the same as the data in the original class? So I would make a class with the numbers 1 to 5 as the data in it, then make a second class with the same names for sections (or very similar).

2009年1月23日 · This is consistent with the history of Python, from Unifying types and classes in Python 2.2. If you subclass a built-in type, extra space is automatically added to the instances to accomodate __dict__ and __weakrefs__.

From New-style and classic classes: Up to Python 2.1, old-style classes were the only flavour available to the user. The concept of (old-style) class is unrelated to the concept of type: if x is an instance of an old-style class, then x.__class__ designates the class of x, but type(x) is always <type 'instance'>.