标签：nbsp xtu microsoft relative 名称 级别 and 报错信息 asc
按照格式形成相应的日志条目，写入到制定的目录中去。
特点：
源代码书写方法：
import logging file_handler = logging.FileHandler(‘a.txt‘,‘a‘,encoding=‘utf-8‘) #日志存放路径 fmtl = logging.Formatter(fmt="%(asctime)s-%(name)s-%(levelname)s") #存放格式 file_handler.setFormatter(fmtl) #进行关联 logger = logging.Logger(‘日志对象名称，对应的name值‘,level=logging.ERROR) #设置日志接收等级 logger.addHandler(file_handler) #logger与file_handler对应 logger.error(‘错误信息‘)
源码：报错信息等级：
CRITICAL = 50 FATAL = CRITICAL ERROR = 40 WARNING = 30 WARN = WARNING INFO = 20 DEBUG = 10 NOTSET = 0
源码：可以使用的fmt信息：
%(name)s Name of the logger (logging channel) #设置的名称
%(levelno)s Numeric logging level for the message (DEBUG, INFO,WARNING, ERROR, CRITICAL) #报错等级（显示数值）
%(levelname)s Text logging level for the message ("DEBUG", "INFO","WARNING", "ERROR", "CRITICAL") #报错的等级（显示英文）
%(pathname)s Full pathname of the source file where the loggingcall was issued (if available) #完成路径加文件名称
%(filename)s Filename portion of pathname #文件名称
%(module)s Module (name portion of filename) #路径
%(lineno)d Source line number where the logging call was issued(if available) #触发日志行号
%(funcName)s Function name #函数名称
%(created)f Time when the LogRecord was created (time.time()return value) #以time.time形式出现
%(asctime)s Textual time when the LogRecord was created #创建时间
%(msecs)d Millisecond portion of the creation time #毫秒显示
%(relativeCreated)d Time in milliseconds when the LogRecord was created,relative to the time the logging module was loaded(typically at application startup time)
%(thread)d Thread ID (if available) #线程ID
%(threadName)s Thread name (if available) #线程名称
%(process)d Process ID (if available) #内存ID
%(message)s The result of record.getMessage(), computed just asthe record is emitted #接受的信息
常用版本：
import logging
file_handler = logging.FileHandler(filename=‘a.txt‘,mode=‘a‘,encoding=‘utf-8‘)
logging.basicConfig(
format = "————————%(asctime)s-%(levelname)s————————", #指定格式记录，下面指定了全部保存信息，所以这里不用将很多信息都收集。
datefmt= ‘%Y-%m-%d %H-%M-%S‘, #指定日期的格式，将毫秒去掉
handlers=[file_handler,],
level= logging.ERROR) #设置接受的报错等级。
try:
int(‘abc‘)
except Exception as e:
logging.error(e,exc_info = True) #这里的exc_info指保存全部保存信息，而不只是保存部分。
日志分割：
每隔一段时间生成一个日志文件，而不会是全部都在一个日志文件中。
import logging
from logging import handlers
file_handler = handlers.TimedRotatingFileHandler(filename=‘a.txt‘,when=‘h‘,interval=1,encoding=‘utf-8‘) #将报错文件每1小时创建一个新的文件。格式是：a.txt时间
logging.basicConfig(
format = "————————%(asctime)s-%(levelname)s————————",
datefmt= ‘%Y-%m-%d %H-%M-%S‘,
handlers=[file_handler,],
level= logging.ERROR)
时间间隔书写源码：
S - Seconds
M - Minutes
H - Hours
D - Days
midnight - roll over at midnight
W{0-6} - roll over on a certain day; 0 - Monday
标签：nbsp xtu microsoft relative 名称 级别 and 报错信息 asc
原文地址：https://www.cnblogs.com/xinbing/p/12893712.html
