如何在 Python 中的函数调用之间维护列表和字典? [英] How to maintain lists and dictionaries between function calls in Python?

问题描述

我有一个功能.在里面，我正在维护一个值字典.我希望在不同的函数调用之间维护该字典

I have a function. Inside that I'm maintainfing a dictionary of values. I want that dictionary to be maintained between different function calls

假设 dic 是:

a = {'a':1,'b':2,'c':3}

在第一次调用时，比如说，我将 a[a] 改为 100字典变成 a = {'a':100,'b':2,'c':3}

At first call,say,I changed a[a] to 100 Dict becomes a = {'a':100,'b':2,'c':3}

在另一个电话中，我将 a[b] 改为 200我希望那个 dic 是 a = {'a':100,'b':200,'c':3}

At another call,i changed a[b] to 200 I want that dic to be a = {'a':100,'b':200,'c':3}

但在我的代码中，a[a] 不保持为 100.它更改为初始值 1.

But in my code a[a] doesn't remain 100.It changes to initial value 1.

我需要尽快答复....我已经迟到了...请朋友们帮帮我...

I need an answer ASAP....I m already late...Please help me friends...

推荐答案

您可能在谈论可调用对象.

You might be talking about a callable object.

class MyFunction( object ):
    def __init__( self ):
        self.rememberThis= dict()
    def __call__( self, arg1, arg2 ):
        # do something
        rememberThis['a'] = arg1
        return someValue

myFunction= MyFunction()

从那时起，将 myFunction 用作一个简单的函数.您可以使用 myFunction.rememberThis 访问 rememberThis 字典.

From then on, use myFunction as a simple function. You can access the rememberThis dictionary using myFunction.rememberThis.

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