使用python配置日志

在自动化测试过程中，日志是非常重要的一个部分，特别是当运行出现错误时，需要查看日志来分析定位解决问题。

实例

下面通过一个实例来捕捉日志。

1. 自动打开百度
2. 搜索selenium

首先创建日志配置文件log.conf添加如下配置内容:
log.conf

[loggers]
keys=root,infoLogger

[logger_root]
level=DEBUG
handlers=consoleHandler,fileHandler

[logger_infoLogger]
handlers=consoleHandler,fileHandler
qualname=infoLogger
propagate=0

###############################################
[handlers]
keys=consoleHandler,fileHandler

[handler_consoleHandler]
class=StreamHandler
level=INFO
formatter=form02
args=(sys.stdout,)

[handler_fileHandler]
class=FileHandler
level=INFO
formatter=form01
args=('mylog.log', 'a')

###############################################
[formatters]
keys=form01,form02

[formatter_form01]
format=%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s
datefmt=%Y-%e-%d %H:%M:%S

[formatter_form02]
format=%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s
datefmt=%Y-%e-%d %H:%M:%S

其次创建.py文件加载配置文件如创建：test_log.py文件
test_log.py

# 导入日志模块
import logging
import logging.config
from selenium import webdriver

# 加载日志配置文件
CON_LOG = 'log.conf'  #注意是log.conf所在路径
logging.config.fileConfig(CON_LOG)
logging = logging.getLogger()

# 打开百度
driver = webdriver.Firefox()
driver.get('http://www.baidu.com')

try:
    # 输出日志
    logging.info('baidu selenium')
    driver.find_element_by_id('kw').send_keys('selenium')
    driver.find_element_by_id('su').click()
    logging.info('succeed')
except Exception as e:
    # 输出报错日志
    logging.error(e)
finally:
    driver.close()

运行结果

2018-30-30 14:15:48 test_log.py[line:12] INFO baidu selenium
2018-30-30 14:15:48 test_log.py[line:15] INFO succeed


进程已结束,退出代码0

日志文件截图

日志文件

下面来看看出错的情况日志的输出格式

# 改成错误的id
 driver.find_element_by_id('kw1').send_keys('selenium')

运行结果

2018-30-30 14:20:16 test_log.py[line:12] INFO baidu selenium
2018-30-30 14:20:16 test_log.py[line:17] ERROR Message: Unable to locate element: [id="kw1"]


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日志文件

日志文件

如果想看更详细的日志信息,可以修改如下代码

# 增加一个参数exc_info=1
logging.error(e, exc_info=1)

运行结果

2018-30-30 14:23:23 test_log.py[line:12] INFO baidu selenium
2018-30-30 14:23:23 test_log.py[line:17] ERROR Message: Unable to locate element: [id="kw1"]
Traceback (most recent call last):
  File "F:/PycharmProjects/untitled7/test_log.py", line 13, in <module>
    driver.find_element_by_id('kw1').send_keys('selenium')
  File "C:\Python35\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 285, in find_element_by_id
    return self.find_element(by=By.ID, value=id_)
  File "C:\Python35\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 787, in find_element
    'value': value})['value']
  File "C:\Python35\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 252, in execute
    self.error_handler.check_response(response)
  File "C:\Python35\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 194, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException: Message: Unable to locate element: [id="kw1"]