Python

Confirm the following in setting:Static_url = '/static/'Put the static directory under the app, create the static directory in the app, and then create the CSS, JS, image.To add a path to a static resource in HTML:{% load staticfiles%}Load the image

Differentiate by number of stored values Scalar/Atomic Type Number, string Container type list, tuple, dictionary By Variable immutable distinction Variable List, dictionary

defInsert_sort (alist):#from the second position, that is, the element labeled 1 starts to insert forward forIinchRange (1, Len (alist)):#starting from the first element I, if it is less than the previous one, swap position forJinchRange

f = open ("A.txt", ' R ', encoding= "Utf-8")F.tell () where is the current cursorF.read () reads files, but can be read by byte and character1, when the mode is byte mode F.read (3) for reading 3 bytes2, when the mode is byte mode F.read (3) for

Import= Urllib.request.urlopen ('http://www.placekitten.com/g/500/600' = response.read () with open ('cat_500_600.jpg','WB ') as F: F.write (cat_img)Urlopen () in parentheses can be either a string or a request object, which is converted into a

Rabbitmq_server_topic Topic mode1 #!/usr/bin/env python2 #{data} {time}3 #_*_coding:utf-8_*_4 5 ImportPika,sys,time6Connection =Pika. Blockingconnection (Pika. Connectionparameters (7 'localhost'))8Channel = Connection.channel

RABBITMQ Queue:Send side:1 #!usr/bin/env python2 #-*-coding:utf-8-*-3 #Author Calmyan4 #python5 #2017/6/26 16:086 #__author__= ' Administrator '7 ImportPika8Connetion =Pika. Blockingconnection (9Pika. Connectionparameters ('localhost')#Create a

Character encoding:Translate human characters into numbers that computers can recognizeCharacter encoding tableA table of correspondence between human characters and computer numbersASCII, GBK, Utf-8, UnicodeUnicode "encode (UTF8)" bytesBytes

Types of Python: CPython When we downloaded and installed Python 2.7 from the official Python website, we immediately got an official version of the interpreter: CPython. This interpreter was developed in C language, so called CPython.

Requirements: Enter user name and password Successful authentication, display welcome information User Name 3 input error, exit the program Password 3 input error, lock user name Readme: UserList.txt is the file

Summary for example the following:1) A variable with a "_" before it: a private variable. A variable with a "_" in front of it, but there is no real encapsulation hidden, the outside still can access to ask2) A variable with a "_" behind it, in

It's almost one months to learn python, now it's time to fill in the entry standard procedure Hello world! This is probably the entrance ceremony for learning all kinds of computer languages. Python is especially easy to write. As shown below:Print (

Learn C language We all know that variables to be defined before use, but Python does not have to define, can be used directly, this is not the most inverse of the place, the Chinese can be directly taken as the variable name, this is it subversion

Login module: Whether we go to that site, often encountered such a situation, let us log on to this site, the flowchart is as follows: Ideas: 1. When we login to the site, we will first enter the user name, this time, some websites will remind us

Run the first program hello_world.py #_ *_coding:utf-8_*_print ("Hello world!") Output Result: Hello world! Variable #_ *_coding:utf-8_*_name = "Beyoungt" #_ *_coding:utf-8_*_name = "Beyoungt" Print (name) name = "Abby" Print (name) Output Result:

Python sequence type Sequence: A character, list, tuple all sequences support an iterative sequence that represents an ordered set of objects indexed as nonnegative integers the and metacharacters group belongs to an immutable sequence,

Origin: Video download, resolution to a website, found that its video ID is encrypted with AES, using this library.To decrypt a very simple JS code: T.video = CryptoJS.AES.decrypt (T.video, Secret). toString (CryptoJS.enc.Utf8); Originally thought

First, define a class Class Dog: # defines class def __init__ (self, name): # Constructor, constructor method = = Initialization method Self.name = name # D.name = attribute of the name class/member variable def say_hi (self): #

　　　　　　　 　 1, what is the three-mesh operation: (boolean expression? value 0: value 1;) 5>3?alert (' 5 large '): Alert (' 3 large '); i.e. if (5>3) {alert (' 5 large ')}else{alert (' 3 large ')}; Note: The difference between the three mesh

A very simple example:1 for in range (0, 2): #0 to 10 is the Loop range, 2 is the loop step 2 print(" ", I)Use the For loop to refine the previous example:Age_konishi = 23 forIinchRange (3):#The default step is 1guess_age = int (input