Custom Exception Handling Code

exception.py

import sys
import logging
import pandas as pd

def error_message_detail(error, error_detail:sys):
    _, _, exc_tb = error_detail.exc_info()

    file_name = exc_tb.tb_frame.f_code.co_filename

    error_message = "Error occured in Python Script name [{0}] Line No. [{1}] Error Message [{2}]".format(file_name, exc_tb.tb_lineno, str(error))

    return error_message

class customException(Exception):

    # Constructor or Initializer
    def __init__(self, error_message, error_detail:sys):
        super().__init__(self, error_message)
        self.error_message = error_message_detail(error_message, error_detail=error_detail)
    
    # __str__ is to print() the value
    def __str__(self):
        return self.error_message


def load_dataset(file_name):
    try:
        # load the dataset from file_name
        df = pd.read_csv(file_name)
        
    except FileNotFoundError as e:
        raise customException('File not found', error_detail=sys)
        
    except ValueError as e:
        raise customException('Invalid file format', error_detail=sys)

if __name__ == "__main__":

    try:
        load_dataset('dataset.csv')
        
    except customException as e:
        print(e)

When I try to run this code I got 3 errors:

Module cannot be used as a type

Argument of type "Module("sys")" cannot be assigned to parameter "error_detail" of type "Module("sys")" in function "error_message_detail"
  Type "Module("sys")" cannot be assigned to type "Module("sys")"

"tb_frame" is not a known member of "None"

Can you please support

Here is the modified code for exception.py

import sys
from src.logger import logging

def error_message_detail(error,error_detail=sys.exc_info()):
,,exc_tb=error_detail
if exc_tb is not None:
file_name = exc_tb.tb_frame.f_code.co_filename
line_number = exc_tb.tb_lineno
else:
file_name = "unknown"
line_number = "unknown"
error_message="Error occured in python script name [{0}] line number [{1}] error message[{2}]".format(
file_name,line_number,str(error))

return error_message

class CustomException(Exception):
def init(self,error_message,error_detail=sys.exc_info()):
super().init(error_message)
self.error_message=error_message_detail(error_message,error_detail=error_detail)

def __str__(self):
    return self.error_message

After this please also make the change in data_ingestion.py file

    except Exception as e:
        raise CustomException(e,sys.exc_info())