Python

Http://www.cnblogs.com/vamei/archive/2012/07/19/2600135.htmlPython small topic for quick tutorial Job answerWrite a program to determine if 2008 is a leap year.Write a program that calculates October 1, 2008 is the day of the year? (January 1, 2008

What is the life cycle of the Django request?To put it simply, find the corresponding function (or class) and return the string (or return the rendered string after reading the HTML) by matching the URL correspondence.Dissected as follows:1.

LoggingAvailable log levels: Debug 10 Info 20 Warning 30 Error 40 Critical 50 Logging Default parameters: The default log level is warning. The default logs are output to the terminal. The default log

TCP-based sockets, the key is two loops, a link loop, a communication loopThere are two main classes in the Socketserver module: the server class (solve the link problem) and the request class (to solve the communication problem)Server class:Request

Before looking at Socketserver source code, look at an example:classBase (object):def __init__(self, name): Self.name=name self. Testfunc ()defTestfunc (self):Print('Do Base Testfunc')classSon (Base):defTestfunc (self):Print('Do Son Testfunc')

Integral type of 1.pythonDuring programming, it is often necessary to work with some numbers, and at most sometimes to find their absolute values, as shown below:A = 100b =-20Print (a)Print (b.__abs__ ()) # #这种以下划线开头的很少用Print (ABS (a) + ABS (b)) #

process-oriented and object-oriented programming ideas:Object-oriented--object oriented programming, short for OOP, is a programming idea. Before we talk about object-oriented, let's talk about what is the programming paradigm, the programming

Here's how to create a str string:s="123456"S2=str ("123456") s3=Str () ; Print (s) Print (S2) Print (S3) # result 123456123456# a space to come, this lineSTR is commonly used in the following ways:#remove the left and right spaces of the

What is INI? You can understand it as a generic term for a configuration file. such as test.conf, so you can understand that he is the INI file, which usually contains some configuration information. For example, the basic information of the

differences between co-process and io multiplexingall inherit the same class libevent.soThe process can also be understood as IO multiplexingIo multiplexing is a bit more inclined to IOThe co-process is a more upper-level package a shift in favor of

DescribeACOs () returns the inverse cosine radian value of x.GrammarThe following is the syntax for the ACOs () method:Import Mathmath.acos (x)Note:ACOs () is not directly accessible, you need to import the math module, and then call the method

DescribeThe float () function is used to convert integers and strings into floating-point numbers.GrammarThe float () method syntax:class float ([x])Parameters X--Integer or string return valueReturns the floating-point number.InstanceThe

1. DictionariesA dictionary is the only type of mapping in the Python language. The hash value (key) and the object (value) pointed to in the mapping type object are a one-to-many relationship. A Dictionary object is mutable, which is a container

1 #python2 #-*-coding:utf-8-*-3 """4 __title__ = ' '5 __author__ = ' WLC '6 __mtime__ = ' 2017/10/15 '7 """8 ImportRe9 Import TimeTen ImportMath One ImportCSV A ImportRequests - fromBs4ImportBeautifulSoup - fromCollectionsImportdeque the -

Introduction to PythonPython is an advanced dynamic, fully object-oriented language that functions, modules, numbers, strings are objects, and fully supports inheritance , overloading, derivation, multiple inheritance , Beneficial to enhance the

1. As for Python, I don't know much about choosing this language as a second language to learn. It's also a coincidence, no brain impulse bought a python programming (from getting started to practicing)PS: The author of the book is very hanging Oh,

In Python, the sequence types are str, bytes, ByteArray, list, tuple, range. The so-called sequence, the description is orderly, you can do some specific operations through the index. First understand the two most important of the sequence objects:

First, IntroductionPy2exe is a tool for converting a Python script into a standalone executable program (*.exe) on Windows so that you can run the executable program on a Windows system without having to install Python. Py2exe has been used to

Yield and pythonyield of python Generator For details, refer to [Python yield Usage Analysis] and [differences between Python xrange and range ].   A function with yield is a generator, which is different from a common function. Generating a

Python3 function return, python3 function return 1 # def logger (): 2 # f = open ("loge.txt", "a") 3 # f. write ("2017-09-15 exec function") 4 # f. close () 5 # print ("2017-09-15 exec function") 6 #7 # print ("------------------") 8 #9 # Return