如何从python中的另一个文件调用函数

Question

I am not too far into python yet and here is the case.

Say I have one python file called functions.py which holds a class with my functions. Below is an example.

import json

class Functionalities:
    def addelement(element):
        # code goes here`

And I have another python file, kind of 'executable' script which does all the job using functions from functions.py class

Adding from . import functions from . import functions doesn't help.

How to I call functions from the class from another file?

Answer 1

Unlike java, you don't have to use classes in python. If a class is used only as a holder for functions, chances are that you want a free function (one without a class) instead.

But to answer your actual question, you can use the import statement. That will run the other .py file, and make the namespace available so you can call things defined there.

functions.py :

import json

class Functionalities:
    def addelement(element):
        # code goes here`

main.py :

import functions
f = functions.Functionalities()
f.addelement('some element')