#3 Requests 的日志配置

requests logging 2019-08-09 
import http.client
import logging

import requests

LOG_LEVEL = logging.DEBUG
LOG_FORMAT = '%(asctime)s [%(thread)s] [%(name)s:%(funcName)s#%(lineno)d] %(levelname)s %(message)s'
logging.basicConfig(level=LOG_LEVEL, format=LOG_FORMAT)

LOG_HTTP = logging.getLogger("http.client")

def httpclient_log(*args):
    LOG_HTTP.log(logging.DEBUG, " ".join(args))

http.client.print = httpclient_log
http.client.HTTPConnection.debuglevel = 1

#2 logging 时间格式

Python logging 2017-03-12 
import logging
LOG_LEVEL = logging.DEBUG
LOG_FORMAT = '%(asctime)s %(levelname)s %(message)s'
logging.basicConfig(level=LOG_LEVEL, format=LOG_FORMAT)
logging.info('hello world')

默认时间格式是 yyyy-mm-dd hh:mm:ss,xxx，如果我们要改这个格式可以用 datefmt 参数，遵循 time.strftime 的格式化参数格式。

问题有一个，毫秒从哪里来？

方法一：使用 msecs 占位符

最简单的办法：在格式字符串中使用 msecs 占位符，比如：

import logging
LOG_LEVEL = logging.DEBUG
LOG_FORMAT = '%(asctime)s.%(msecs)03d %(levelname)s %(message)s'
LOG_DATEFMT = '%H:%M:%S'
logging.basicConfig(level=LOG_LEVEL, format=LOG_FORMAT, datefmt=LOG_DATEFMT)
logging.info('hello world')

方法二：改用 datetime 对象

import logging
from datetime import datetime

class MyFormatter(logging.Formatter):
    converter = datetime.fromtimestamp

    def formatTime(self, record, datefmt=None):
        ct = self.converter(record.created)
        if datefmt:
            # s = time.strftime(datefmt, ct)
            s = ct.strftime(datefmt)
        else:
            # t = time.strftime("%Y-%m-%d %H:%M:%S", ct)
            t = ct.strftime("%Y-%m-%d %H:%M:%S")
            s = "%s,%03d" % (t, record.msecs)
        return s

logger = logging.getLogger(__name__)
logger.setLevel(logging.DEBUG)
console = logging.StreamHandler()
logger.addHandler(console)
formatter = MyFormatter(fmt='%(asctime)s %(levelname)s %(message)s', datefmt='%H:%M:%S.%f')
console.setFormatter(formatter)
logging.info('hello world')