python之强大的日志模块【转】
1.简单的将日志打印到屏幕
import
logging
logging.
debug(
'This is debug message'
)
logging.
info(
'This is info message'
)
logging.
warning(
'This is warning message'
)
屏幕上打印:
WARNING:root:This is warning message
默认情况下，logging将日志打印到屏幕，日志级别为WARNING；
日志级别大小关系为：CRITICAL > ERROR > WARNING > INFO > DEBUG > NOTSET，当然也可以自己定义日志级别。
2.通过logging.basicConfig函数对日志的输出格式及方式做相关配置
import
logging
logging.
basicConfig(
level=
logging.
DEBUG,
format=
'%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s'
,
datefmt=
'%a, %d %b %Y %H:%M:%S'
,
filename=
'myapp.log'
,
filemode=
'w'
)
logging.
debug(
'This is debug message'
)
logging.
info(
'This is info message'
)
logging.
warning(
'This is warning message'
)
./myapp.log文件中内容为:
Sun, 24 May 2009 21:48:54 demo2.py[line:11] DEBUG This is debug message
Sun, 24 May 2009 21:48:54 demo2.py[line:12] INFO This is info message
Sun, 24 May 2009 21:48:54 demo2.py[line:13] WARNING This is warning message
logging.basicConfig函数各参数:
filename: 指定日志文件名
filemode: 和file函数意义相同，指定日志文件的打开模式，'w'或'a'
format: 指定输出的格式和内容，format可以输出很多有用信息，如上例所示:
%(levelno)s: 打印日志级别的数值
%(levelname)s: 打印日�
相关文档：
1. 打印变量和变量自显
>>> myString = 'Hello World!'
>>> print myString
Hello World!
>>> myString
'Hello World!'
因为： print 语句调用str()函数显示对象，而交互式解释器则调用repr()函数来显示对象
sys.stdout.write('hello')不会在末尾加上'\n'，而print会
2. 打印文件
hand ......
Python lists have a built-in sort() method that modifies the list in-place and a sorted() built-in function that builds a new sorted list from an iterable.
There are many ways to use them to sort data and there doesn't appear to be a single, central place in the various man ......
#coding=utf-8
from newtest.wiki.models import WiKi
from django.template import loader, Context
from django.http import HttpResponse, HttpResponseRedirect
from django.shortcuts import render_to_response
def index(request, pagename=""):
"""显示正常页面，对页面的文字做特殊的链接处理"""
......
Python的面向对象性质
类和对象是面向对象编程的两个主要方面。类创建一个新类型，而对象这个类的 实例 。这类似于你有一个int类型的变量，这存储整数的变量是int类的实例（对象）。
需要注意的是，在Python中，即便是整数也被作为对象（属于int类）。这和C++、Java（1.5版之前）把整数纯粹作为类型是不同的。通� ......
