def send(self, data, flags=None): # real signature unknown; restored from __doc__
 """
 send(data[, flags]) -> count

 Send a data string to the socket. For the optional flags
 argument, see the Unix manual. Return the number of bytes
 sent; this may be less than len(data) if the network is busy.
 """
 pass

 def sendall(self, data, flags=None): # real signature unknown; restored from __doc__
 """
 sendall(data[, flags])

 Send a data string to the socket. For the optional flags
 argument, see the Unix manual. This calls send() repeatedly
 until all data is sent. If an error occurs, it's impossible
 to tell how much data has been sent.
 """
 pass

#encoding=utf-8

import os, sys
import datetime
import time


class Mylog(object):

 # 根文件夹
 root_dir = sys.path[0]
 # 根目录
 root_path = sys.path[0] + os.path.sep
 # 系统目录分割线
 sys_sep = os.path.sep
 # 配置
 option = {
 # 日志级别： 0：全部，1：调试，2：警告，3：错误
 'level': 0,
 # 是否开启，如果关闭则不输出也不记录日志
 'is_open': True,
 # 是否print输出
 'is_print': True,
 # 是否记录到日志文件
 'is_write': True,
 # 是否在每条日志内容前面加前缀
 'is_prefix': True,
 # 如果开启了每条日志前加前缀，设置日志级别为1的前缀
 'level_1_prefix': 'Test: ',
 # 如果开启了每条日志前加前缀，设置日志级别为2的前缀
 'level_2_prefix': 'Warning: ',
 # 如果开启了每条日志前加前缀，设置日志级别为3的前缀
 'level_3_prefix': 'Error: ',
 # 存放日志文件的根文件夹名称
 'root_dir_name': 'mylog',
 # 自定义存放日志文件的文件名称，此文件夹是在 root_dir_name 文件夹下
 'dir_name': ''
 }

 def __init__(self, config=None):
 if config is not None:
  self.option.update(dict(config))

 # 日志保存的文件夹（全路径）
 save_dir = self.root_path + self.option['root_dir_name']

 # 创建文件夹
 if os.path.isdir(save_dir) is not True:
  os.mkdir(save_dir)
 if len(self.option['dir_name']) > 0:
  save_dir += self.sys_sep + self.option['dir_name']
  if os.path.isdir(save_dir) is not True:
  os.mkdir(save_dir)

 self.save_dir = save_dir
 self.save_path = save_dir + self.sys_sep

 '''
 输入日志／记录日志
 '''
 def log(self, content='', level=0):
 self._print_log(content, level)
 self._write_log(content, level)

 '''
 输入日志
 '''
 def _print_log(self, content, level):
 if self.option['is_open'] is True and self.option['is_print'] is True:
  if self.option['level'] == 0 or self.option['level'] == level:
  if level > 0:
   content = self.option['level_' + str(level) + '_prefix'] + content
  print(content)

 '''
 记录日志
 '''
 def _write_log(self, content, level):
 if self.option['is_open'] is True and self.option['is_print'] is True:
  if self.option['level'] == 0 or self.option['level'] == level:
  if self.option['is_prefix'] is True:
   today = datetime.date.today()
   file_name = str(today) + '.log'
   now = time.strftime("%H:%M:%S")
   log_file = self.save_path + file_name
   if level > 0:
   content = self.option['level_' + str(level) + '_prefix'] + content
   if os.path.isfile(log_file):
   save_file = open(log_file, 'a')
   else:
   save_file = open(log_file, 'w')
   save_file.write(str(now) + "\r\n" + content + "\r\n")
   save_file.close()


 

**重点内容
#!/usr/bin/env python
#-*- coding: GBK -*-
__author__ = 'DiaoHuabin'

import logging
import getpass
import sys

#定义MyLog类
class MyLog(object):
 '''这个类用于创建一个自用的log'''
 def __init__(self): #类MyLog的构造函数
 user = getpass.getuser() #返回用户的登录名
 self.logger = logging.getLogger(user) #返回一个特定名字的日志
 self.logger.setLevel(logging.DEBUG) #对显示的日志信息设置一个阈值低于DEBUG级别的不显示
 logFile = './'+sys.argv[1][0:-3] + '.log' # 日志文件名
 formatter = logging.Formatter('%(asctime)-12s $(levelname)-8s %(name)-10s %(message)-12s')

 '''日志显示到屏幕上并输出到日志文件内'''
 logHand = logging.FileHandler(logFile) #输出日志文件，文件名是logFile
 logHand.setFormatter(formatter) #为logHand以formatter设置格式
 logHand.setLevel(logging.ERROR) #只有错误才被记录到logfile中

 logHandSt = logging.StreamHandler() #class logging.StreamHandler(stream=None)
 # 返回StreamHandler类的实例，如果stream被确定，使用该stream作为日志输出，反之，使用
 #sys.stderr
 logHandSt.setFormatter(formatter) #为logHandSt以formatter设置格式

 self.logger.addHandler(logHand) #添加特定的handler logHand到日志文件logger中
 self.logger.addHandler(logHandSt) #添加特定的handler logHandSt到日志文件logger中

 '''日志的5个级别对应以下的五个函数'''
 def debug(self,msg):
 self.logger.debug(msg) #Logs a message with level DEBUG on this logger.
 # The msg is the message format string

 def info(self,msg):
 self.logger.info(msg)

 def warn(self,msg):
 self.logger.warn(msg)

 def error(self,msg):
 self.logger.error(msg)

 def critical(self,msg):
 self.logger.critical(msg)

if __name__ == '__main__':
 mylogw = MyLog()
 mylogw.debug("I'm debug")
 mylogw.info("I'm info")
 mylogw.warn("I'm warn")
 mylogw.error("I'm error")
 mylogw.critical("I'm critical")