Python

Python provides some interesting and useful functions, such as any all zip, which greatly simplifies our code and can handle iterative objects more gracefully, while at the same time we need to be aware of some situations any any(

int (x [,base ])           converts x to an integer   long (x  [,base ])            convert x to a long integer   float (x  )               convert x to a floating point number    Complex (real [,imag ])           Create a complex   str (x  )        

1. the two ways of the Hello World programExecute under Windows1. Input in editor without compilingprint ("Hello world!") can be run directly2, can be saved into a program and then run saved as a text, Create a new. py file. Execute in CMD

Input and outputPrint () Adds a string to the parentheses to output the specified text to the screen.>>>print ('helloWorld')Hello Worldprint()A function can also accept multiple strings, separated by a comma "," and can be connected to a string of

python1.GILGlobal interpretation Lock (only one kernel, thread damage, all bad)2. Strong type For example, do not want to add different types of designation, will be directly error.3. Object-oriented4. Functional typeMulti-process way to improve

Print "Enter your name",Somename=raw_input ()Print SomenameThe result is the following print "Enter your name" followed by a comma "," the input will be displayed on the same linePython 2.7.6 (default, Nov, 19:24:24) [MSC v.1500-bit (AMD64)] on Win32

In addition to the built-in modules, Python also has a large number of third-party modules.Basically, all third-party modules are registered on the Https://pypi.python.org/pypi, and can be installed with PIP as long as the corresponding module name

1. While loop statement#!/usr/bin/env python#-*-coding:utf-8-*-import timebol = truewhile bol: print ' 1 ' time.sleep (1) bol = Fals Eprint ' hello,world! '2. Unlimited output numbers#!/usr/bin/env python#-*-coding:utf-8-*-import timen =

How to achieve rounding (not rounding down) under python2.7Thought for a long while did not want to come out, later Baidu a bit.Basically is the original number +0.5, or the use of the original downward rounding mechanismIf the original is If the

"' VERSION:0.5AUTHOR;WUJIANQIANGDATE:2016/11/13 ' import xml.etree.elementtree as etfrom  Collections import counterfrom pprint import pprintimport jsonfrom fnmatch  import fnmatchimport osclass xmlparse (object):     def __init__ ( Self):

python format substitution and meaning of the string Symbol Description %c Formatting characters and their ASCII code %s formatting strings %d formatting integers

Tuples: In pairs of parentheses, can not be added or deleted, can only be viewed.Dictionary: In a pair of curly braces, the dictionary contains key and value, and the dictionary is unordered.Here are some common operations for dictionaries and

First, the Environment preparation1. Download the Python installation package (to the official website)https://www.python.org/downloads/Recommended download Install the latest version2. Set "Environment variables"My Computer---Properties----advanced-

1, the Python program deployment to the SAE need to make changesRun Python programs on-line that need to be converted into WSGI.Running a python program in the SAE requires specifying a function as an entry function.Application = Sae.create_wsgi_app

List: denoted by []Common methods: List.append,list.insert,list.remove,list.pop,list.count,list.sort,list.reverse,list.index,list.copy Common operations:list_1 = [' haha ', ' xixi ', ' lala ', ' hehe ', ' Zizi ', ' Wuwu ']Print (List_1[1:3]) #

Python add app1. Add a Project[[email protected] django]# django-admin.py startproject web[[email protected]  django]# ll Total dosage  8drwxr-xr-x 3 root root 4096 1 month    1  23:11 web[[email protected] django]# cd web[[email protected] web]#

List attributes: lists are generated onceA = [1,2,3,4,5,6,7,8,9]Or[i*2 for I in range] # # #---> list generation===[2,4,6,8,10,12,14,16,18,20]===Two List of differences:1 list is written dead, 2 list can do some operations inside to output the

Url-two xViews-additional Information for the requestFrom Django.core.handlers.wsgi import wsgirequestRequest.environrequest.environ[' http_user_agent ']-decorative DeviceFBV:def Auth (func):def Inner (reqeust,*args,**kwargs):v = Reqeust.

Create a project with django and create a project with django First, you have to install python and django, and then configure the environment variables. If you do not install python, you should start from configuring the environment variables. 1.

Sublime Text3 is configured to run the python shortcut key in an interactive environment. sublimepythonInstall plug-ins It feels good to write code under Sublime Text3, But I encountered some problems when writing Python.Use Sublime Text3 to open