Python

First, make clear the difference between encode () and Decode () The role of Encode () is to convert Unicode-encoded strings to other encoding formats. For example: St1.encode ("Utf-8") is the function of encoding

Problem clue 1As you can tell, the default encoding for a text file is not UTF8.We open a text file and click Save As 2We see that the default encoding is ANSI in the Code column of the new window. Regardless of what the encoding is,

Some people say that college students in school to code enough to 10W lines of code, also some people say, not to read the number of lines to write code, but to modify the number of lines of code ...Whoever said it, the people who said it were kind

############ #difflib ##############File Difference ComparisonExample 1:Import DifflibText1 = ' Hello Westos 'Text2 = ' Hello Zhan 'Text1_lines = Text1.splitlines ()Text2_lines = Text2.splitlines ()# Create a Diff objectD = difflib. Differ ()# Use

[[email protected] ~]# cat monitor.py #!/usr/bin/env python import osprocess = "/tmp/sshd.lock" Os.system ("Ps-ef|grep ssh D|grep-v grep>%s "% process" if not (os.path.getsize (process)): print ("no Running") Else:print ("Running") [[email P

Adorner:Open Closure principle1. Open for expansionWe say that no one program can have all the features in mind at the beginning of the design and will not make any updates or changes in the future. So we have to allow code extensions, add new

Python relies on self-study, to find some good website can make you more effective!Foreign sites do not say, first talk about the domestic bar. Hope to have some help for everyone.csdn--the world's largest Chinese it communityOpen source China--Find

Python gets a free agent availableWhen using crawlers to crawl the same site, often by the site's IP anti-crawler mechanism to be banned, this can be resolved by using a proxy. There are a lot of sites on the Internet that offer the latest free

# Python Crawler Project 1Python Web page requestRequestsPOSTGETPage status Code1 # -*-coding:utf-8-*- 2 from Import BeautifulSoup 3 Import Requests 4 5 " http://www.baidu.com " 6 unknow = requests.get (URL)7print(type (unknow))8

Reasons to choose the Python languageC language : The code compiles the machine code, the machine code executes directly on the processor, each instruction controls the CPU to work.PHP language : The most good at web programming, it can be embedded

Python Multiprocessing ExampleServer Code:#!/usr/bin/python #-*-coding:utf-8-*-# mpserver.py## Queues are thread and process Safe.from Multiprocessing.manag ERS import basemanager# g as a server process Stateg = 10000class MathClass (object):

Directory:Content:type function:1, typeofOnly the base data type can be judged, and for reference data types, it can only be judged as an objectvar S=8;console.log (typeof (s));var s2=new String (' Hello2 '); Console.log (typeof (S2)); Can't judge

A simple decorative device1. Why use adorners?The function of the adorner: the function of the original function is extended without modifying the original function and its calling modeThe essence of adorners: a closure functionSo let's take a look

One, the code By default, Python3 source files are encoded in UTF-8, and all strings are Unicode strings. Of course you can also specify a different encoding for the source file: 1 #-*-CODING:GBK-*- Second, identifiers 1. The first character must

In the two iterations of the recent project, the database needs to be updated, two times in different ways, depending on the changes in business requirements. First: Use Python's mysqldb module to update with native SQL statements Import mysqldb#

Why does this happen? Careful child shoes may be found to be different from the data we send to the server for the requested connection: The information for the first picture is {"Roomid": 98284, "UID": 271298361556770} The information in the

Read and Write files to view python encoding, Test environment of this article: python 2.7 Note: Beginner's learning notes   If you enter Chinese directly in the current environment, an error is displayed. Non-ASCII character '\ xe4' in file

Cainiao tutorial-exercise instance answer I, Example Question:There are four numbers: 1, 2, 3, and 4. How many three numbers can be composed of different and non-repeated numbers? What is each? 1 #coding=utf-82 3 from itertools import permutations4 5

Python three days, python three days I am very tired from working overtime till half past one am, but I always feel that I still want to write something. Python Operators Assume the following variables: a = 10, B = 20: operator description

Crawler-Scrapy framework and scrapy framework Scrapy is an application framework written in Python to crawl website data and extract structural data. It is widely used. With the strength of the Framework, users can easily implement a crawler by