How can I call my class python file in my main python file?

Question

I am having a problem calling my class and function to my main code. I created a class and do the method in it and just call it in my main code.

This is my class:

from nltk.corpus import wordnet
class syn:
    def synon():
        f = open('filename', "r")
        first = f.readline()
        print("1. ", first)
        input_ans = input('Answer: ')
        synonyms = []
        for syn in wordnet.synsets(first):
            for l in syn.lemmas():
                synonyms.append(l.name())
        if input_ans == first:
            score += 0
            print("Wrong")
        elif input_ans in set(synonyms):
            print("Correct")
            score += 1
        else:
            score += 0
            print("Wrong")

This is my main code:

import os
from synonyms import syn
from nltk.corpus import wordnet

a = syn()
a.synon()

It does not print anything.

Python is not Java. You didn't have to wrap functions in classes. They work happily on their own. — Klaus D.
– Klaus D., Commented Nov 25, 2021 at 6:34

Jacob Lee · Accepted Answer · 2021-11-25 06:36:51Z

1

Basically, you are missing the self argument. See here or here for more logic behind why it's needed. If you're going to wrap the function in a class, you might find __init__ and other "dunder" methods interesting.

Here is a toy example that will do what you want:

class syn:
    def member_function(self):
        print("hello from syn")
        
a = syn()
a.member_function()

edited Nov 25, 2021 at 6:36

Jacob Lee

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answered Nov 25, 2021 at 6:33

Hasz

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2 Comments

Peter Trcka Over a year ago

There are no class attributes in this case. Method should have @staticmethod decorator.

Jay Over a year ago

It worked now. I just have a typo. What does it mean when I have no attribute in function? I am having an error from part of score.

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