本文介绍了类foo,类foo()和类foo(object)之间的区别?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我注意到所有3-> class foo
, class foo()
和 class可以使用foo(object)
,但是我对这3个之间的区别感到困惑,如果有的话? (我的意思主要是在属性中, python3
)
I noticed all 3 -> class foo
, class foo()
and class foo(object)
can be used but i am confused as to what is the difference between these 3, if there is any? (I mean in properties mainly, python3
)
推荐答案
让我们打破它们down:
Let's break them down:
-
class foo
:
- Python 3 :通常是这样。默认情况下,Python为您添加
object
作为基类。 - Python 2 :它会创建旧样式
classobj
,这会引起您各种麻烦。 / li>
- Python 3: It's usually the way to go. By default, Python adds
object
as the base class for you. - Python 2: It creates an old style
classobj
that will cause you all sorts of headaches.
class foo()
:
- Python 3 和 Python 2 :类似于
foo类
对于这两个Python版本,都将其修剪掉,看起来很难看,没有区别。
- Python 3 and Python 2: Similar to
class foo
for both Python versions, trim it off, it looks ugly and makes no difference.
- Python 3 和 Python 2 :在这两个Python中,都将生成具有所有最熟悉的东西的新样式类。人们在编写可能也在Python
2
中使用的代码时通常也会使用这种形式,显式地从对象继承会导致该类成为Python 2中的新样式,而在3中没有任何区别(除了一些额外的输入)。
- Python 3 and Python 2: In both Pythons, results in a new style class that has all the goodies most know. People usually use this form when writing code that might be used in Python
2
too, explicitly inheriting from object causes the class to be new style in Python 2 and makes no difference in 3 (apart from some extra typing).
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