projects/ML_StudentPerformance/src/exception.py

import sys
from projects.ML_StudentPerformance.src.logger import logging

def error_message_detail(error, error_detail : sys) :
    _,_,exc_tb = error_detail.exc_info()        #This will give us the information in which file the exception has occured and on which line number it has occured
    file_name = exc_tb.tb_frame.f_code.co_filename
    error_message = "Error occured in Python script name [{0}] line number [{1}] error message[{2}]".format(
    file_name, exc_tb.tb_lineno, str(error))

    return error_message

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

    def __str__(self) :
        return self.error_message