Python

Download Source: Http://sourceforge.net/projects/mysql-python/files/mysql-python-test/1.2.4b4/MySQL-python-1.2.4b4.tar.gz/download MV Download mysql-python-1.2.4b4.tar.gz TAR-ZXVF mysql-python-1.2.4b4.tar.gz CD MYSQL-PYTHON-1.2.4B4 Python setup.py

#-*-Coding:utf-8-*- #mysqldb Import time, MySQLdb #连接 Conn=mysqldb.connect (host= "localhost", user= "root", passwd= "root", db= "test", charset= "UTF8") cursor = Conn.cursor () The return value of the tuple The return value of the Conn.cursor

Lru:least recently used, the least recently used algorithm. Its use of the scene is: in a limited space to store objects, when the space is full, will be a certain principle to delete the original objects, commonly used principles (algorithms) have

V=models. Charfield (max_length=none[, **options]) #varcharV=models. Emailfield ([max_length=75, **options]) #varcharV=models. Urlfield ([Verify_exists=true, max_length=200, **options]) #varcharV=models. Filefield (upload_to=none[, max_length=100, **

Read text fileinput = open (' Data ', ' R ')#第二个参数默认为rinput = open (' Data ')Read binary filesinput = open (' Data ', ' RB ')Read fixed byteFile_object = open (' Abinfile ', ' RB ')3. Writing filesWrite a text fileOutput = open (' Data ', ' W

#!/usr/bin/pythonimport urllib2import sysdef stock_data (stock_id, stock_num, purchase _price):    url =  ' http://hq.sinajs.cn/list=%s%06d '  %  ((stock_id  == 1 or stock_id > 600000)  and  ' sh '  or  ' sz ',  stock_id     page = urllib2.urlopen

Python's use of memory Shallow Copyexplain : copy of the reference (copy only the parent object); Deep copy explanation : A copy of the object resource; Import module:>>> Import Copy>>> a = [1,2,3,[' A ', ' B ', ' d ']]>>> b

import datetimeimport time**datetime Turn Timestamp * *In [1]: now = datetime.datetime.now()In [2]: time.mktime(now.timetuple())Out[21433501775.0**datetime Turn string**In [3]: now.strftime(‘%Y-%m-%d‘)Out[3‘2015-06-05‘In

1. Source data like this: format:. csv and. TXT content: (hundreds of thousands of rows) Size: 64.7M and 64.8M pc: i5-2540m 4G memory 2. Data Update detection: This is some location infographic, 1 and 2 are data collected at different times in the

Last month was too busy, to finish this modification has not yet written a blog, now to fill up a bit.Before using PROTOBUF to do the protocol packaging, often there is a pain point, can not use the value of the specific data as key to index data.

Threshold processing is to divide an image into 1/2 values according to a specific value.Mahotas use two ways, one is the traditional Otsu way, the other is rildley-calavard at that timeImport Mahotas as Mhimage=mh.imread (' image/building05.jpg ') #

Three ways to import a function From math import sqrt "" "" "Import the SQRT function only" "" e.g. sqrt (+) from math import * "" "Import all function  s from Math module "" "e.g. sqrt (+) import Math #import math Module,and use the function

Gaussian BlurImport Mahotas as Mhimport numpy as Npfrom matplotlib import pyplot as Pltimage=mh.imread (' image/building05.jpg ') image=mh . Colors.rgb2gray (image) Im8=mh.gaussian_filter (image,8) im16=mh.gaussian_filter (image,16) im32=mh.gaussian_

Just applied for a blog, the first time to write essays, record their recent learning situation, I hope that they can continue to learn, and constantly enrich themselves ~Recently began to learn Python, record, I hope you learn from each other,

Number of objects in a folder in python Preface: My colleagues have a problem. They need to find 7,000th files in tens of thousands of files, which is messy... I checked python-related materials. Although it was not completely solved, something was

Python daemon usage instance analysis, python daemon This example describes how to use the Python daemon. Share it with you for your reference. The specific analysis is as follows: The daemon can always run without blocking the exit of the main

Django uses ajax to initiate a request to return JSON data, djangojson This example describes how django initiates a request through ajax to return JSON data. Share it with you for your reference. The specific implementation method is as

How many days does python get in a month? How does python get it? This example describes how many days a month can be obtained by python. Share it with you for your reference. The specific analysis is as follows: In the datetime module of python,

The role of adding r to the string in python, and the role of the python string This example describes how to add r before a string in python. Share it with you for your reference. The specific analysis is as follows: Adding r before the string

Example of Python inter-process communication usage and python process usage This example describes the communication usage between Python processes. Share it with you for your reference. The details are as follows: #! /Usr/bin/env python