Python 3:在类中的方法之间共享变量 [英] Python 3 : Sharing variables between methods in a class

问题描述

寻找如何使一个类中的一个方法/函数设置的变量可被同一类中的另一个方法/函数访问，而不必在外部执行过多的操作(和有问题的代码).

Looking for how to make a variable set by one Method/function in a class accessible to another method/function in that same class without having to do excess (and problematic code) outside.

这是一个不起作用的示例，但可能会向您显示我正在尝试做的事情:

Here is an example that doesn't work, but may show you what I'm trying to do :

#I just coppied this one to have an init method
class TestClass(object):

    def current(self, test):
        """Just a method to get a value"""
        print(test)
        pass

    def next_one(self):
        """Trying to get a value from the 'current' method"""
        new_val = self.current_player.test
        print(new_val)
        pass

推荐答案

您在一种方法中进行设置，然后在另一种方法中进行查找:

You set it in one method and then look it up in another:

class TestClass(object):

    def current(self, test):
        """Just a method to get a value"""
        self.test = test
        print(test)

    def next_one(self):
        """Trying to get a value from the 'current' method"""
        new_val = self.test
        print(new_val)

请注意，在尝试检索self.test之前，需要先进行设置.否则，将导致错误.我通常在__init__中这样做:

As a note, you will want to set self.test before you try to retrieve it. Otherwise, it will cause an error. I generally do that in __init__:

class TestClass(object):

    def __init__(self):
        self.test = None

    def current(self, test):
        """Just a method to get a value"""
        self.test = test
        print(test)

    def next_one(self):
        """Trying to get a value from the 'current' method"""
        new_val = self.test
        print(new_val)

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