[英]Cross Class Subclass use
I am experimenting with python object orientated programming.我正在尝试使用 python 面向对象编程。 Of course I learned about inheritence and so on, but this question is very specific and I couldn't find the answer anywhere yet.
当然,我学习了继承等,但是这个问题非常具体,我在任何地方都找不到答案。
Let's say we have a class class mainClass:
.假设我们有一个
class mainClass:
。 In this class there is a function def func(self):
.在这个类中有一个函数
def func(self):
。 And within this function func()
I want to use two custom classes.在这个函数
func()
中,我想使用两个自定义类。 Can I and how can I use the first custom class within the second one?我可以以及如何在第二个自定义类中使用第一个自定义类吗? (Here's a example)
(这里是一个例子)
class custom1:
def func1(self):
#do something
class custom2:
def func2(self):
#call function func1 from class custom1 without creating another instance
class mainClass:
def func(self):
obj1 = custom1()
obj2 = custom2()
obj2.func2()
Like I said I don't want to create a second instance of custom1
within custom2
.就像我说的,我不想在
custom2
中创建custom1
的第二个实例。 Only the one in mainClass
.只有
mainClass
中的一个。
Thanks for your answers :)感谢您的回答:)
what about passing it via the constructor of the first class?通过第一类的构造函数传递它怎么样?
class custom1:
def func1(self):
#do something
class custom2:
def __init__(self, obj1):
self._obj1 = obj1
def func2(self):
self._obj1.func1()
class mainClass:
def func(self):
obj1 = custom1()
obj2 = custom2(obj1)
obj2.func2()
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