Python

If you have any questions, add the QQ group.14670545Discussion Python-2.7.3 can coexist with ironpython. Next we will install Python-2.7.3 : Thunder: // token Or:FTP: // jb51user: www.jb51.net@xl.jb51.net: 8021/200907/tools/python2_jb51.rar  ,

>>> Range () [0, 1] >>> range () [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] >>> range (0, 10, 2) [0, 2, 4, 6, 8] >>> range (10) [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] >>> Range () # represents from 1 to 5 (not including 5) [1, 2, 3, 4] >>> range (, 2) # represents

The Python language contains six built-in sequences. There are two main types: List and metadata. The list can be modified, but the tuples cannot. If you want to add or delete some elements, you can only use the list. To restrict some elements, you

1. Read the file content Filepath = "file path" (lambda F: (F. Read (), F. Close () (file (filepath) [0] 2. Write the content to the file (Lambda F, D: (F. write (D), F. close () (file (r 'd:/a.txt ', 'w'), 'Data to be written ') 3. Filter files

The glob module is one of the simplest modules with very little content. You can use it to find the path name of a file that complies with specific rules. It is similar to searching files in windows. Only three matching characters are used for

The Python language is very comfortable and has simple syntax,CodeVery short. I used to finish reading an entry book at noon, so I found some information on the Internet, imitated and wrote a web crawler. I used to write it in C, the amount of code

A. Comparison between native SQL statements and asq statements Suppose there is an SQL query statement: Select ID, IP, CH, date from TBL group by CH, date; To use the group_by method of the asq module of Python, You can implement the

The Domain Name System (DNS) is a distributed database used to replace the host name with an IP address. There are two reasons for DNS: (1) It makes it easy for users to remember their names, rather than pure IP addresses; (2) allow the server to

Dynamic addition of class attributes or member functions in Python We sometimes need to add attributes or methods to classes dynamically. For example, we can use this method when doing plug-ins. Use a configuration file to specify the modules to

Character encoding in python2.x is a headache, but it has been solved for a long time. When I browsed the web page today, I saw that pythoner was asking about Python encoding, write a write encoding problem. The record is as follows:   First

Python 2.4 or later. Two call methods:1. Without Parameters@ Def F (): Python will finally handle the following:F = a (f) , Which can be expanded:@ @ B @ C Def F (): Finally, python will handle the following:F = A (B (C (F )))   2. With parameters:

In python, Excel can be operated through COM. The most common cross-platform method is pyexcelerator. for usage of pyexcelerator, refer to limodou's "using pyexcelerator to read and write Excel files". However, Gae and Django do not directly export

The function for formatting the date and time in python isDatetime. datetime.Strftime ();The functions converted from string to date type are:Datetime. datetime. strptime (),Both functions involve formatted strings of date and time, which are listed

The copy module is used to copy objects. This module is very simple and provides only two main methods:Copy. CopyAndCopy. deepcopyIndicates the shortest copy and the deep copy respectively. What is light replication, what is deep replication, and

Document directory Marshal. Dump (value, file [, Version]) Marshal. Load (file) Marshal. dumps (value [, Version) Marsahl. Load (string) Sometimes, you need to save an object in the memory to the disk persistently, or serialize the object to

In the python standard module, multiple modules are used for data compression and decompression, such as zipfile, Gzip, and bz2. I introduced the zipfile module last time. Today I will talk about the zlib module.Zlib. Compress (string [, level])

Run the following code: #! /Usr/bin/ENV PythonS = "Chinese"Print s This problem has been frequently encountered recently: Problem 1: syntaxerror: Non-ASCII character '\ xe4' in file E: \ coding \ Python \ untitled 6.py on line 3, but no encoding

Document directory Stack implementation Python captures the latest blog list of oschina An email generator written in Python Stack implementation #!/usr/bin/env python #coding=utf-8 #python version 2.7.4class stack: def __init__(self,list=

import osdef BFS_Dir(path, dirCallback = None, fileCallback = None): queue = [] ret = [] queue.append(path); while len(queue) > 0: tmp = queue.pop(0) if(os.path.isdir(tmp)): ret.append(tmp) for item in

IP address sorting: Suppose there are a bunch of disordered IP addresses, Source data: LS1 = ['192. 168.1.8 ', '192. 168.36.8', '192. 168.26.8 ',] Expected Value after sorting: LS1 = ['192. 168.1.8 ', '192. 168.26.8', '192. 168.36.8 '] >>> LS1 = ['