记录混乱

Question

我正在从https://www.youtube.com/watch?v=jxmzY9soFXg运行日志记录教程。我已经复制并粘贴了代码，但我不了解日志记录。据我了解，我为每个模块本身创建了两个日志文件，但是当我运行任何模块时，我都会在一个日志文件上获得两个文件的输出。我不明白，也将不胜感激。是否不可能为每个创建一个，而不是一前一后地运行。我看到的唯一变化是哪个模块运行了代码，例如main与模块名称。

在本教程的重点是创建单独的日志文件以便于调试时，为什么以某种方式连接日志文件？

员工类的代码为

# -*- coding: utf-8 -*-
"""
Spyder Editor

This is a temporary script file.
"""

import logging

logger = logging.getLogger(__name__)
logger.setLevel(logging.INFO)

formatter = logging.Formatter('%(levelname)s:%(name)s:%(message)s')

file_handler = logging.FileHandler('employee.log')
file_handler.setFormatter(formatter)

logger.addHandler(file_handler)


class Employee:
    """A sample Employee class"""

    def __init__(self, first, last):
        self.first = first
        self.last = last

        logger.info('Created Employee: {} - {}'.format(self.fullname, self.email))

    @property
    def email(self):
        return '{}.{}@email.com'.format(self.first, self.last)

    @property
    def fullname(self):
        return '{} {}'.format(self.first, self.last)


emp_1 = Employee('John', 'Smith')
emp_2 = Employee('Corey', 'Schafer')
emp_3 = Employee('Jane', 'Doe')

and the code for the main program is:

import logging

import employee


logger = logging.getLogger(__name__)
logger.setLevel(logging.INFO)

formatter = logging.Formatter('%(asctime)s:%(name)s:%(message)s')

file_handler = logging.FileHandler('sample.log')
file_handler.setLevel(logging.DEBUG)
file_handler.setFormatter(formatter)

stream_handler = logging.StreamHandler()
stream_handler.setFormatter(formatter)

logger.addHandler(file_handler)
logger.addHandler(stream_handler)





def add(x, y):
    """Add Function"""
    return x + y


def subtract(x, y):
    """Subtract Function"""
    return x - y


def multiply(x, y):
    """Multiply Function"""
    return x * y


#def divide(x, y):
#    """Divide Function"""
#    try:
#        result = x / y
#    except ZeroDivisionError:
#        logger.exception('Tried to divide by zero')
#    else:
#        return result


num_1 = 10
num_2 = 0

add_result = add(num_1, num_2)
logger.info('Add: {} + {} = {}'.format(num_1, num_2, add_result))

sub_result = subtract(num_1, num_2)
logger.info('Sub: {} - {} = {}'.format(num_1, num_2, sub_result))

mul_result = multiply(num_1, num_2)
logger.info('Mul: {} * {} = {}'.format(num_1, num_2, mul_result))


#div_result = divide(num_1, num_2)
#logger.debug('Div: {} / {} = {}'.format(num_1, num_2, div_result))