How do i call a function within a class in python

Question

i am having issues with my code. i have a python class and functions it. i want to be able to call the function inside it to another function, below is my code

import random

class now:
    def __init__(self, name):
        self.name = name

    def get_name(self):
        return self.name

    def num1(self):
        print('One')

    def num2(self):
        print('Two')

    def num3(self):
        print('Three')

    def all(self):
        num = [self.num1, self.num2, self.num3]
        random.choice(num)()

    def start(self):
        print('my name is: ', self.name)
        print('i choose:', self.all() )


my_take = now('king')

my_take.start()

my problem now is that when i run the code, on the i choose, self.all() is given me none

Does this answer your question? [How is returning the output of a function different from printing it?](https://stackoverflow.com/questions/750136/how-is-returning-the-output-of-a-function-different-from-printing-it) — Mechanic Pig, Jun 03 '22 at 07:45

score 2 · Answer 1 · answered Jun 03 '22 at 07:06

2

Your all method has no return statement in it, so it implicitly returns None.

answered Jun 03 '22 at 07:06

ndc85430

1,395
3
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When i add return to it, i get an error of > – chibuike ogodo Jun 03 '22 at 07:08
Don't delete the empty brackets after random.choice. It should be `return random.choice(num)()` – Olli Jun 03 '22 at 07:12
Thank you, i used a return on all of them and then added return to the random.choice as you said and it worked perfectly – chibuike ogodo Jun 03 '22 at 07:17

alanturing · Answer 2 · 2022-06-03T07:14:49.153

1

You have to return the Strings, not print them. Try it like this:

import random

class now: 
    def __init__(self, name):
        self.name = name
        
    def get_name(self):
        return self.name
    
    def num1(self):
        return 'One'
    
    def num2(self):
        return 'Two'
    
    def num3(self):
        return 'Three'
    
    def all(self):
        num = [self.num1, self.num2, self.num3]
        return random.choice(num)()
    
    def start(self):
        print('my name is: ', self.name)
        print('i choose:', self.all() )

You are using a lot of Methods to accomplish a very simple tast. Why dont try it like this:

import random

class now: 
    def __init__(self, name):
        self.name = name
        
    def get_name(self):
        return self.name
    
    def start(self):
        print('my name is: ', self.name)
        print('i choose:', random.choice(["One", "Two", "Three"]) )

edited Jun 03 '22 at 07:14

answered Jun 03 '22 at 07:09

alanturing

214
1
8

Even at that, it still shows None – chibuike ogodo Jun 03 '22 at 07:13
If I run exactly this code I don't get None but a number. @chibuike ogodo. It outputs following: ```my name is: king i choose: One``` – alanturing Jun 03 '22 at 07:18
on you second answer, that's not what i want. thou i just used this simple terms on it. i wanted to create different functions with different behavior and have them randomly selected. but then i needed to use the simple term to illustrate. But i have been able to do it. thank for your help – chibuike ogodo Jun 03 '22 at 07:20
you are getting None because nothing is actually running, it is only interpreting the code. To run it, initialize the class with a name then call .start() – Noah Jun 03 '22 at 07:21

How do i call a function within a class in python

2 Answers2