Python

(i) Insert sortBefore each loop, the front I bits are always ordered.1 defInsert_sort (list):2 forIinchRange (len (list)):3Key =List[i]4 forJinchRange (i-1,-1,-1):5 ifKey List[j]:6LIST[J+1] =List[j]7LIST[J] =Key8

Add a default module search path for Python python training 2014-03-07 23:29:36 Method One: function add1 Import sys2 views Sys.path3 Adding Sys.path.append ("c:\\")Method Two: Modify environment variablesW user can modify system environment

Messaging server RabbmitRabbitMQ Message QueuingPython has two Q, threading queue, data interaction between different threadsProcess queue: Interaction between different processes is a false statement. This is used to interact between the parent

#! /usr/bin/env python#coding =utf-8s = "{0} x {1}={2}"For I in range (1,10):Print ""For J in Range (1,i+1):print S.format (i,j,i*j), Results:1 x 1=12 x 1=2 2 x 2=43 x 1=3 3 x 2=6 3 x 3=94 x 1=4 4 x 2=8 4 x 3=12 4 x 4=165 x 1=5 5 x 2=

A. Map function that applies a corresponding function to each element in any iteration sequence. (regardless of what type of sequence is processed, the last returned is a list.) ）The role has already been introduced in the title, so let's first say

If you just jump from one page to another, then the web crawler is very boring. In order to effectively makeWith them, we need to do something on the page when using crawlers. Let's see how to create a crawler to collectSets the page title, the

This problem occurs when the socket socket module makes the send and recv methods because of changes in python3.x and python2.x versions, inPython 3, Bytes strings and unicodestrings is now The different types. Conversion between decode () and

Module is the code that encapsulates a particular function.The modules are divided into three types:1. Custom Modules2; third-party modules3. Built-in ModulesOne, custom moduletest.py#!/usr/bin/env python#-*-Coding:utf-8-*-Print ("I am Test")Print ("

3.15hequan # #连接 123 paragraph br wrap 123 Title font enlargement, to the H6hequan chain label all tags are divided into: block-level Tags: div (whiteboard), H Series (increased bold), P Label (spacing between paragraphs and paragraphs) inline tags:

Development environment: WindowsEditor: PycharmPython Environment: 3.6Basic requirements: Write a login Enter User name password Show welcome message after successful authentication Three-time error after locking Basic ideas:1.

Finally involved a bit of professional, to tell the truth, for the present I am still quite large, this sentence to the future of their ownThe challenge begins:First of all to understand Python3.6, the bottom is developed by C + +, so in Linux need

Show limited interfaces to external When you publish a Python third-party package, you do not want all the functions or classes in the code to be externally import, add the all property to the init.py, and fill in the list with the Import class or

Before I speak the Python decorator, I would like to give an example, although a bit dirty, but with the decorator this topic is very appropriate. Everyone has underwear main function is used to modesty, but in the winter it can not wind and cold

Yield is simply a generator, the generator is a function that remembers the position of the last time it was returned in the body of the function. A second (or nth) call to the generator function jumps to the middle of the function, and all local

Python has both Str object and Unicode object two strings that can hold the byte encoding of the characters, but they are different types, which is important and why there are encode and decode. The significance of encode and decode in Pyhton can

Python operators are similar to other languages (We only know the basic usage of these operators for the time being, so we could expand the content later, the advanced application is not introduced at the moment) Mathematical operations >>>print 1+9

This article mainly describes the Python selenium crawl content and stored to the MySQL database implementation code, the need for friends can refer to the following I've been through an article about how to crawl csdn blog summaries and more.

NumPy is an open-source numerical extension of Python. This tool can be used to store and manipulate large matrices, which is much more efficient than Python's own nested list (nested list structure) structure, which is also useful for representing

The appearance pattern of design patterns in Python advocates less coupling with multiple modules for code management, and is illustrated with examples below. Application Features: When many complex and small functions need to invoke requirements,

first, the operating systemIn order to realize the function, improve efficiency, fully and efficiently manage and optimize the use of computer hardware, user-friendly, the computer on the basis of its hardware installed a layer of software, and