Python

Start a projectThe first time you use Django, you have to do some initialization setup work. Create a new working directory, such as D:\tool\python\Python27\workspace\djcode, and then enter the directory. Go to the directory you created and run the

Installing DjangoI am the Python and Django installed under Windows, the following link can download Django:http://www.djangoproject.com/download/1. Download django-1.6.6.tar.gz Compressed files2. Unzip3. Under the command line, go to the Django

To make a backup of important files:Ideas:1. The files and directories that need to be backed up are specified by a list.2. The backup should be saved in the primary backup directory.3. File backup as a tar.gz file.The name of the 4.zip archive is

1. Through the socket1In [1]:ImportSocket2 3In [2]: SMTP =Socket.socket (socket.af_inet, socket. SOCK_STREAM)4 5In [3]: Smtp.connect (("163mx00.mxmail.netease.com", 25))6 7In [4]: Smtp.send ("Hello Mr he.\r\n")8OUT[4]: 149 TenIn [5]: SMTP.RECV (1024)

The list in Python, the dictionary and the set have pop functions, but the parameters are slightly different: The following parameters are based on the Python 3.4.11. List1 >>> help (list.pop)2method_descriptor:34 Pop (...) 5 and return item at

Basis:1. Tuples are composed of simple object groups.2. Tuples are similar to lists, but cannot be modified in place (they are immutable) and are usually written in parentheses () rather than as a series of items in the box number [].================

Copy problem for list: 1,1 >>> a 2 [1, 2] 3 >>> b=a[:] 4 >> ;> b 5 [1, 2] 6 >>> b[0]=20 7 >>> b 8 [2] 9 >>> a [1, 2]2,1 Import Copy 2 >>> c=copy.copy (a) 3 >>> C 4 [1, 2] 5 >>> c[1]=30 6 >>> C 7 [1,] 8 >>& Gt a 9 [1, 2] >>> b [20,

Tag:python    function     1. A simple non-parametric function #!/usr/bin/evn python#filename: function1.pydef sayhello ():     print  ' hello world! ' SayHello () 2. function parameter #!/usr/bin/evn pyhon # filename: fun_param.pydef printmax (A,B)

1.for cycle #!/usr/bin/evn python#filename: for.pyfor i in range (1, 5):     print ielse:    print  ' The for loop is over ' 2. Break Statement #!/usr/bin/evn python#filename: break.pywhile true:    s =  raw_input (' enter something :  ')     if s ==

[Python] Two Types of excel date reading methods are available for xlrd. There is an excle table that needs to be filtered and written to the database, but the cell of the date type is a number, so the solution is queried. Basic code

Install Python package management tool pip and Application Instances0. Before installation Environment: Windows8.1 + Python2.7. environment variables have been set.1. Install pip When I first started learning Python, I had a headache in the

Python built-in type continuation Python does not allow you to use a variable that is not assigned a value. This will cause an exception. Python assignment: Assign multiple values at a time: Use the constant value of Tuple to assign Tuple to

The beauty of Python [from cainiao to masters] -- NotImplemented Analysis I did not have the intention to encounter NotImplemented when I wrote the code today. I was wondering if it was the younger brother of NotImplementedError, so I did a little

Python built-in data types Positioning of Python in programming languages: Script Language-scriptinglanguage Advanced Dynamic Programming Language.   Python is dominated by data, and variable value change refers to a variable pointing to an address.

[Python-tools] defaultdict application scenarios In the Python standard library, collections performs a lot of expansion operations on the data structure of the set type. These operations will bring a lot of convenience when we use the

How to import Python modules To open the python program anywhere in CMD, import the installation directory of pyhon to the environment variable, for example, my installation directory D: \ Python27, desktop computer --- Right-click Properties ---

Python socket communication instanceI. socket Introduction 1. socket sockets are currently portable standard objects for network application providers on specific network protocols (such as TCP/IP, ICMP/IP, UDP/IP.They allow programs to accept and

Python Study Notes (3) -- IterationWhat is iteration? What is the difference with recursion? Based on Wikipedia and online materials: iteration: iterations are activities that repeat the feedback process, typically aimed at approaching and reaching

Django1.3 solution for adding an app to prompt that the module does not exist, django1.3app When you use Django to add an application, the system always prompts Error: No module named myapp. The application with this name cannot be found, but I have

Web. py outputs the dollar sign in the template, web. py USD Because web. py has defined the "$" symbol in the template, special processing is required if you want to use the dollar symbol in the template. If you want to output the "$ name" string