bigsnowstorm的专栏

http://www.tutorialspoint.com/python/python_strings.htm One of Python's coolest features is the string format operator %. This operator is unique to strings and makes up for the pack of having fu

http://woodpecker.org.cn/abyteofpython_cn/chinese/ch03s06.html     1.      如果你需要某个Python函数或语句的快速信息帮助，那么你可以使用内建的help功能。尤其在你使用带提示符的命令行的时候，它十分有用。比如，运行help(str)——这会显示str类的帮助。str类用于保存你的程序使用的各种文本（字符串）。类将

The telnetlib module provides a Telnet class that implements the Telnet protocol.  也就是说，可以通过该模块连接telnet server。 官方文档给出了该模块的一个典型应用，如下： import getpass import sys import telnetlib HOST = "localh

http://www.voidspace.org.uk/python/articles/authentication.shtml#base64 首先可以用如下代码判断是否可以读取该网页的url： import urllib #print urllib.urlopen('http://www.google.com').read() theurl = urllib.urlopen('http

一、 As simply as I can put it: __iter__ defines a method on a class which will return an iterator (an object that successively yields the next item contained by your object). The iterator ob

http://wiki.python.org/moin/Generators 一、 Generators functions allow you to declare a function that behaves like an iterator, i.e. it can be used in a for loop. Simplified Code T

一、isinstance http://blog.youkuaiyun.com/kiki113/article/details/4152964 Python可以得到一个对象的类型 ，利用type函数：   >>>lst = [1, 2, 3]   >>>type(lst)   不仅如此，还可以利用isinstance函数，来判断一个对象是否是一个已知的类型。    isinstance说明如下

一、 http://hi.baidu.com/feng2211/item/d55d0415602bfcfcdceeca45 Python中有一个有趣的语法，只要定义类型的时候，实现__call__函数，这个类型就成为可调用的。 换句话说，我们可以把这个类型的对象当作函数来使用，相当于 重载了括号运算符。 下面定义这样一个类型： class g_dpm(object): def __in

1.os.getenv() os.getenv = getenv(key, default=None)     Get an environment variable, return None if it doesn't exist.     The optional second argument can specify an alternate default. 2.os.ge

1. platform.platform(aliased=0, terse=0) Returns a single string identifying the underlying platform with as much useful information as possible. The output is intended to be human readable rathe

http://docs.python.org/2/library/getpass.html The getpass module provides two functions: getpass.getpass([prompt[, stream]]) Prompt the user for a password without echoing. The user is p

http://www.cnblogs.com/hanmeimei/archive/2011/07/23/python5.html Python提供一个标准的模块，称为pickle。使用它你可以在一个文件中储存任何Python对象，之后你又可以把它完整无缺地取出来。这被称为 持久地 储存对象。 还有另一个模块称为cPickle，它的功能和pickle模块完全相同，只不过它是用C语言编写的

http://stackoverflow.com/questions/2626026/python-sys-argv-lists-and-indexes 1. C:\> hello.py John argv represents all the items that come along via the command-line input, but counting start

http://docs.python.org/release/2.5.2/ref/pass.html pass is a null operation -- when it is executed, nothing happens. It is useful as a placeholder when a statement is required syntactically, but

file(name[, mode[, buffering]]) Constructor function for the file type, described further in section File Objects. The constructor’s arguments are the same as those of the open() built-in funct