如何在Python中将变量从一个函数导入到另一个函数? [英] How can I import a variable from one function to another in Python?

问题描述

我正在一个项目上，我需要导入一个函数中获取的变量，并在另一个函数中使用它.这是我要执行的操作的示例.(这不是我的代码，只是一个示例)

I'm working on a project and I need to import a variable that I got in a function and use it in another one. Here's an example of what I'm trying to do.(this is not my code, just an example)

     def interest(day,month,year):
        interest = x          #I got X by requesting a web data base.

     def calc(debt,time):
        result = (debt*x)/time

是否可以将X从一个函数导入到另一个函数?

Is there a way to import X from one function to another?

谢谢！

推荐答案

您是否考虑过使用类?如果必须将变量传递给许多函数，则类非常有用.

Have you considered using a class? Classes are extremely useful if you have variables that must be passed around to many functions.

class Foo:
    def __init__(self):
        pass

    def set_x(self):
        self.x = 5 # Whatever your source is!

    def calculate_something(self, foo, bar):
        return foo * bar * self.x

q = Foo()
q.set_x()
print(q.calculate_something(2, 3))

输出:30

如果您对使用类不感兴趣，可以执行以下操作:

In case you aren't interested in using classes you could do the following:

1. 获取x.
2. 将其传递给interest和calc，而不是在interest
中获取

1. Fetch x.
2. Pass it to both interest and calc rather than fetching it within interest

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