Python

This practice crawls the portal this bar in the food picture.If the IMG tag and the class attribute are used, the beautifulsoup can be easily solved, but this time use regular expression, I also refer to the blogger's blog: PortalThe SRC address of

DownloadWindows version: https://www.python.org/downloads/windows/Similar to installer end of the file that we need to download, the number of bits according to their own computer to choose (x86:32 bit, x86-64:64 bit)Download the installation

Coding:Coding common functions:' Chinese '. Encode (' utf-8 ') encode Chinese as utf-8 binary streamB ' \xe4\xb8\xad\xe6\x96\x87 'B ' \xe4\xb8\xad\xe6\x96\x87 '. Decode (' Utf-8 ') decodes the binary stream into ChineseChineseList=[]tuple=

PythonDigitalinteger int such as:1 4 8floating-point float :1.0 3.6 78.9Long integer , such as:1L 37565846588L(after an integer plus L is the long integer type, theoretically long integer length of 2147483647 )Note: in When Python is operating on

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Tuple tuplesTuples are called read-only lists, where data can be queried but cannot be modified, so the slicing of strings also applies to tuples. Example: ("A", "B", "C")tu= ('qiaofeng', 2,'xuzhu', True)print(tu [2:])Tuple child elements cannot be

Condition controlNow we write a program: Set your age in the program, and then start the program to let the user guess, after the user input, according to his input prompts the user to enter the correct, if the error, the hint is guessed big or

1 " "Python3" "2 Importrequests//Import Requests Library3 Importjson//Import the JSON library4Key ="'//in single quotes, write your registered Turing player key .5 whiletrue://Main Loop6info = input ('\ n i:')//Enter conversation Information7URL

Python encoding conversion and Chinese processingUnicode in Python is a confusing and difficult problem to understand. Utf-8 is an implementation of Unicode, Unicode, GBK, and gb2312 are coded character sets.Decode is to parse the normal string

First, the cacheCache is to save some of the commonly used data in memory or memcache, in a certain period of time when someone to access the data, no longer to perform operations such as database and rendering, but directly from the memory or

Python implements an automatic Baidu search for answers for millions of answers, and python Baidu search Use python to set up million answers and search for answers automatically by Baidu. Platform Windows 7Python3.6MIX2 mobile phone Code

Python branch structure (switch) operation introduction, pythonswitch Python does not have a switch statement. This article mainly studies the function of implementing the switch statement through the dictionary, as follows. The switch statement is

Using Python to convert a photo into a cartoon image [based on opencv ], This example describes how to convert a photo into a cartoon image using Python. We will share this with you for your reference. The details are as follows: The previous

Flask actively throws exceptions and provides a unified sample code for exception handling. This article mainly introduces flask's active exception throws and unified exception handling. The details are as follows. When an exception occurs in the

Python uses matplotlib to draw a user-defined image function example, pythonmatplotlib This example describes how to use matplotlib to draw custom images in Python. We will share this with you for your reference. The details are as follows: Code

Simple example of using requests and https in python, pythonrequests Requests is a very small and comprehensive library. It can easily write programs that interact with the server. Today, a problem occurs. when interacting with the server, the url

Python uses SQLite and Excel for data analysis. Yesterday, female received an Excel document containing tens of thousands of pieces of data for analysis. At the beginning of a field analysis, Excel was well used and can be done, after the analysis

Python uses the pil library to implement the image merging instance code, This article focuses on the implementation of image synthesis in python PIL. The details are as follows. You need to combine the two images in the project. In two cases, one

How to install python3 in CentOS7, centos7python3 In CentOS7, python2.7 is installed by default. I will teach you how to install python3: 1. Install the dependencies that may be used by python3.6. # yum -y install openssl-devel bzip2-devel

Teach you how to use python to get a ticket to go home for the New Year (simple code), python to go home for the New Year First, let's take a look at how to quickly view the remaining train tickets? When you want to query the train ticket