python class method invocation missing 1 required positional argument

I created class method to easen file reading. But the end result gives me error of file_read=Read_file.file_reading_through_class('./ConfigurationFile/configFile.csv') TypeError: Read_file.file_reading_through_class() missing 1 required positional argument: 'fileName'

the code is below;

import pandas as pd
import sys,os, time,re


class Read_file():
    def file_reading_through_class(self,fileName):
        if getattr(sys, 'frozen', False) and hasattr(sys, '_MEIPASS'):
            path_actual = os.getcwd()
            path_main_folder = path_actual[:-4]
            path_result = path_main_folder + fileName
            print('frozen path', os.path.normpath(path_result))
            file_to_read = pd.read_json(path_result)
            return file_to_read
        else:
            file_to_read = pd.read_json(fileName)
            return file_to_read

file_read=Read_file.file_reading_through_class('./ConfigurationFile/configFile.csv')

>Solution :

You will need to instantiate the class first.
self refers to the instance of the class.

rf = Read_file()
file_read = rf.file_reading_through_class('./ConfigurationFile/configFile.csv')

Or you can mark your function as a static method, and you can use your function the way you are using it.

@staticmethod
def file_reading_through_class(fileName):