Python

Download the installation package: Http://sourceforge.net/projects/mysql-python then unzip.Switch to directory executionPython setup.py InstallError:Environmenterror:mysql_config not foundWorkaround: Locate the Site.cfg file in the installation

Import MySQLdbTryconn = MySQLdb.connect (host= ", user=", passwd= ", db=", port=)cur = conn.cursor ()conn.select_db (' db_name ')Value = [1, ' Colben ']Cur.execute (' INSERT into test values (%s,%s) ', value)values = [(1, ' Colben '), (2, ' Shelly ')

1. Import MySQL Module Python 2.7.5 (Default, June, 18:11:42) [GCC 4.8.2 20140120 (Red Hat 4.8.2-16)] on Linux2type "help", "copyright", " Credits "or" license "for more information.>>> import Mysqldbtraceback (most recent call last): File"

Today, using Wxpython to implement a simple menu, button and binding the point-and-click event and dialog output, it is very simple, but still need a good#!/usr/bin/env python#-*-coding:utf-8-*-#-*-coding:utf-8-*-to support Chinese import osimport

Requests is an HTTP library that uses Apache2 Licensed licenses. Written in Python, more user-friendly and easier to use. Requests uses URLLIB3, so it inherits all of its features. Requests supports HTTP connection retention and connection pooling,

1. By storage: Atomic type and container typeAtomic type: Can contain only one objectContainer type: can contain multiple objects Classification Python type Atomic type Numeric and string

In some cases it is necessary for us to set the proxy server when we request, under what circumstances we decide, then how to set the HTTP request agent?Like Python automatically handles cookies, use urllib2. Build_opener to build. 1 ImportUrllib22

Let's talk about the module structure in this section.The structure of the module is very traditional Chinese medicine, it can let maintenance personnel at a glance understand the code distribution, understand part of the code meaning1.

Python provides good support for multithreading, including: Thread,threading,queue, a multithreaded-related module in Python. It is easy to support the creation of threads, mutexes, semaphores, synchronization and other features.1. Thread: The

1. Start of the "#" comment#注释的东西print ("Welcome")2. "\ n" line break3. "\" then the previous line2>3 or 3==3Note: The logical operator must be in front of \ or error4. Using tuples to assign values to multiple variables5. ":" Separate the

1 #Coding:utf-82 Print('initializing ...')3 ImportRequests4 ImportRe5 fromLxml.htmlImportfromstring6 ImportPyautogui7 ImportSYS8 ImportOS9 fromMultiprocessing.dummyImportPoolTen fromlxmlImport_elementpath One A - classyouku_comment: - the "

Overall thought: Write exactly what you want, first write the template file, then open the template file, string format the template, and finally save the formatted string into the new file. If you have a better idea, please feel free to communicate.

This section is about exception exceptContinue with the previous section of the code, I deliberately mistake the name of the file, and then add the exception to the end of the capture:Try: handler=open ("12.txt") #在这里我特别将文件的名字搞错 for Eachline

Python Builder is a bit difficult to express its concept in words, so here are a few pieces of code to explain ~Generator: Any function that contains a yield statement is called a generator;The generator is an iterator defined by a common function

As a scripting language, the Python language is well-formed, with some similarities to the compilation language, formatted output, and strong typing. The feeling is not very easy to use, at the same time, I have been understanding it is not very

This section to talk about powerful list parsingThe main thing is to assign a value to the list in a rowLet us give you two examples of the following:In the above example, we introduced the range function, whose main function is to take an integer

A string is a sequence of characters (a reminder: a sequence is an important keyword for python), which holds Unicode characters. The strings in Python are immutable (immutable), that is, when you perform an operation on a string, you always produce

Often encountered this situation: The python that comes with the system is 2.6 and needs some of the features in Python 2.7; The system comes with Python 2.x, it needs Python 3.x; There is a need to install multiple Python in the

1. Introductiondecorator is used to dynamically add functionality while the code is running, essentially a higher-order function that returns a function. Suppose there is a need to log logs before each function call and to record the called function

Preparatory workTo ensure that the class is a new class, you should put the _metaclass_=type into the beginning of your moduleClass NewStyle (object):More_code_hereClass Oldstyle:More_code_hereIn this two class Newtype is the new class, Oldtype