Python

1, dir (keywork) error>>> dir (keyword) Traceback (most recent call last): File "", line 1, in 2, the lack of corresponding modules, the use of import or From...import to the corresponding module, the module is actually some of the functions and

function: send e-mail via mail server, Smtplib is an implementation of SMTP client, Support message format: text, HTML, Image, EXCEL1. Ordinary text mail#!/usr/bin/env python# coding:utf-8import smtplibimport stringhost =  " Smtp.qq.com "        

Recently want to learn Python, has been more concerned about Python, yesterday in Python saw a post asked how in Python how to determine whether the password conforms to the specification, there are many replies in the loop, in addition to also have

1. System level: (generally requires root privileges)(1)/etc/profile: This file is the first file that is used when the user logs on, the operating system customizes the user environment, and applies to every user who logs on to the system. This

question No. 0006: You have a directory, put your diary for one months, are txt, in order to avoid the problem of word segmentation, if the content is English, please count the most important words you think of each diary.Idea: Switch to the target

There is a small part of the modification, and add a detailed comment#!-*-coding:utf-8-*-#! Usr/bin/python"' #=====================================================# filename:spider_qb.py# Describe: Download the joke from the embarrassing hundred and

Given a range [M, n] where 0 For example, given the range [5, 7], and you should return 4.Credits:Special thanks to @amrsaqr for adding this problem and creating all test cases.Code is as follow:Class solution: # @param m, an integer # @param

question No. 0005: You have a directory, loaded with a lot of photos, their size is not larger than the size of iPhone5 resolution.Idea: traverse the picture under the directory to zoom in on images larger than iPhone5 resolution. Use the Python PIL

Look at the code first:item = [[‘2015‘,u‘中国‘],[‘2013‘,‘nian份‘]]print itemprint item[0][1]Output Result:There is a discussion about this placeWorkaround:Python2, if the list contains Chinese, the overall output is in hexadecimal output;Links in the

Python's Functools module provides a number of useful features, one of which is the partial function. It is important to note that the partial function here is not the same as the partial function in mathematical sense.When we introduce the function

1. In Ubuntu, the terminal is called as follows:f = txt format text in open ('/home/theone/test_input.txt ', ' r ') cannot be suffixedThe correct should be: F = open ('/home/theone/test_input ', ' R ')Similarly, when HTML is generated: $ python

String manipulation: The% format operation of the string:str = "Hello,%s.%s enough for ya ?"values = (‘world‘,‘hot‘)print str % values输出结果： Hello,world.hot enough for ya ? template string: #coding =utf-8from string import template##

Note: python2.7 version seems to support only beautifulsoup4.4Under normal circumstances, the beautifulsoup is extracted under a DOS command under the Python installation directoryGo to BeautifulSoup folderInstalling with Python setup.py installThe

#Coding:utf-8ImportSys,os,time,types,functools#Adorner, wrap is detected function, and CountdefTimerit (func): @functools. Wraps (func)defWrapper (*args,**kw): Start=time.time () value=func (*args,**kw) End=time.time ()Print("%suse Time is%s"% (func.

Python xml parsing example #-*-Coding: UTF-8-*-"Created on Thu Apr 16 23:18:27 2015 @ author: shifeng" "''' function: parse the CDR_sample.xml file, the output format is the format received by DNorm, and the "label" of the training set is written to

Python uses the multiprocessing module to Implement Asynchronous call methods with callback functions. This example describes how python uses the multiprocessing module to Implement Asynchronous call methods with callback functions. Share it with

Problems and Solutions in the basic Python tutorial (1). Basic python tutorial 1. In ubuntu, when a terminal is called, for example: F = open ('/home/theone/test_input.txt', 'R '). Correct: f = open ('/home/theone/test_input', 'R ') Similarly,

The difference between the _ str _ and _ repr _ methods in Python, __str ___ repr _ It takes a lot of time to perform all tests on my current project. Since there are 26 GB of idle memory, why not let it take advantage of the waste heat? Tmpfs can

Using Python to set tmpfs to accelerate the project tutorial, pythontmpfs It takes a lot of time to perform all tests on my current project. Since there are 26 GB of idle memory, why not let it take advantage of the waste heat? Tmpfs can accelerate

Usage Analysis of the split method in python, pythonsplit This example describes how to use the split method in python. Share it with you for your reference. The specific analysis is as follows: Split is a very important string method. It is the