Python

# Analysis: #5! + 4! + 3! + 2! + 1 # factorial reduce (lambda X, Y: x * y, range () of a number # Addition reduce (lambda X, Y: X + Y, range () # If we use an algebraic method, replace the array range [], each element is 1-5, and each factorial is

Code: Client: #! /Usr/bin/ENV Python # Coding: utf8 # python2.73 lession7_mirrors.py "This is a multi-client test that five users send a total of seven messages 35 times" Import socketfrom time import sleepmsg = ['cs111 ', 'cs222', 'cs333',

Automatic Mail sending should be a common requirement. Python provides corresponding module support. Let's look at the code for automatic mail sending:   # Coding = UTF-8 Import smtplib From email. Mime. Text import mimetext From email. Mime.

Document directory (1) input a function (2) pass in a callable object (3) inherit the Thread class Preface In order to build a small project these two days, I studied the concurrent programming of Python. The so-called concurrency is nothing

Editplus is one of my commonly used file editors. It is very convenient to use it for script programs. Let's take a look at the configuration below: 1. Download editplus.exe from www.editplus.com, and install editplus.exe one step at a time. The

1. The print Statement supports redirection after version 2.0. Use the> Syntax: Output to standard error stream Import sysPrint> SYS. stderr, 'fatal error: Invalid input! ' Output to log file Logfile = open ('/tmp/mylog.txt', 'A ')Print> logfile,

No queue is used, no thread pool is still learning, just Multithreading # Coding: utf8import urllib2, sys, re import threading, osimport time, datetime ''' the queue is not used here, but the multi-thread distribution is not good for webpages with

21. Classification of standard typesThe author divides the standard type into three models to find out the relationship between them and how they interact. ① Storage model: Storage Model category Python types that fit category

A function that contains the yield expression is a special function called a generator function. When called, an iterator is returned ), you can use next or send (MSG) for the call ). Its usage is similar to return. The difference is that it

I have never systematically studied data structures and algorithms from the beginning. Partial reference: http://interactivepython.org/courselib/static/pythonds/SortSearch/sorting.html #-*-Coding: cp936-*-# insert sort def insertsort (a): for I in

# Python2.7 multi-process and multithreading # parallel world * Serial and parallel* Blocking and non-blocking* Sharing and conflict* Multi-process and multi-thread: in windows, multi-process development is not supported, and almost all platforms

Document directory Brief description: Code Hill sorting # Reference books and addresses Solving with algorithms and data structures The original Article provides online debugging functions, which are easy to use.Brief description: Hill sorting,

Training course 6 re usageRe usage process: mode string-> Expression object-> match target textCommon metacharacters: .: Any character except line breaks\: Escape characters when we use metacharacters as common characters for matching[]: Character

Document directory Built-in function: BIFS User Function: UDF Built-in method: BIMs (only the corresponding bit has the corresponding BIM) User method: UDM Reference: First Half of chapter 14 of Python core programming Built-in function

The solution is to add a parameter. Check the code comparison # Coding: utf8 # python2.7 winxpimport urllibimport sys import JSON # url = r'http: // www.weather.com.cn/data/sk/101221201.html'url = r'http: // URL = urllib. urlopen (URL) # The

For the List Operation of the sequence type data structure in Python, the most likely operation is the addition or deletion operation. In [37]: a = [1,2]In [38]:

The error log is (env)lzz@ubuntu:~/Virtualenv/blog1_django_1.4/eshop$ easy_install pilSearching for pilReading http://pypi.python.org/simple/pil/Reading http://www.pythonware.com/products/pilReading http://effbot.org/zone/pil-changes-115.htmReading

Regular Expressions are very useful for text processing. They used to find it difficult. It is very easy to get started by studying it carefully.The first thing to do is metacharacters:[]:-It is often used to create a character set. Only one

Document directory Symptom: Some people in Google solve this problem: The following method is used: Environment: OS: win7 64bit Python: 2.7.5 32bit Solution for rounding Python: General rounding operations use the built-in round method. In [1

  Pamie is an interesting module. It is a module for implementing IE automation. Previously, I used the clientcookie module, which can use urllib2 to access pages through programs and is suitable for environments that require cookie support. However,