Python

Reference Study Address: http://www.iplaypython.com# Coding:utf-8# study 1Import Urllib.request# print (dir (HTML))# Get the header information for the pageUrl= "http://www.iplaypython.com/"Html=urllib.request.urlopen (URL)# Get the status code

Our main discussion is the list and tuple of 2 sequences.(1) Index0 points to the first character, 1 points to the last character.Example:months = [     ' January ',     ' February ',      ' March ',     ' April ',     ' may ',     ' June ',      '

The Caesar algorithm is the simplest encryption and decryption algorithm ...# caeser Cipherimport sys,osmycypher = 25MyDict = ' abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz ' [email  protected]#$%^&* () _+[]\\;\ ',./{}|: "After execution,

Import OS; --Python comes withPrint (OS.GETCWD ())--Get the current working directoryOs.chdir ('/users/longlong/documents ')--Convert to/users/longlong/documents directoryOs.path.join (Parm1, Parm2,...)-Constructs a path name from one or more path

Installing a Python module under Ubuntu can often be used with the Apt-get and PIP commands. The Apt-get command is a package management command that comes with Ubuntu, and Pip is a tool for Python to install the extension, usually pip downloads the

First install and configure the python2.7 environment. Download install Pycrypto 2.6 for Python 2.7Http://www.voidspace.org.uk/downloads/pycrypto26/pycrypto-2.6.win32-py2.7.exe Go to Router download http://192.168.1.1/userRpm/config.bin Place

Example one:ImportWeburls= ('/(.*)','Index') App=web.application (Urls,globals ())classIndex:defGET (self, name):if notName:name=' World'Web.header ('Content-type','text/html; Charset=utf-8') return 'python web dgx' if __name__=="__main__":

     daily work, we need to test the concurrency of the site, response time, can test these points of third-party software is very    more, this is not the focus of this article, We use Python scripts to write a simple piece of code to test the site

More and more, for some terms, really can not see the name of the idea to use their own language/ideas to try to explain, such as socket/sockets, and then such as adorners, only by literal meaning, difficult to understand, but will take you to the

Look at the source of the time to see __call__ not very understand the principle, so here to record Generally speaking, the invocation of __call__ is caused by "()" after the instance, but if you just copy a class to a variable, you may get an error

Import Urllib2import Hashlibopener=Urllib2.build_opener () req= Opener.open ("http://avatar.csdn.net/E/5/5/2_sdjtwenzhihao.jpg") Meta=req.info () file_size=int(Meta.getheaders ("Content-length")[0]) Content_Type= Meta.getheaders

Python module-pickle Module   The pickle module of python implements basic data sequences and deserialization. Through the serialization operation of the pickle module, we can save the information of objects running in the program to the file for

ATM Solved Problem code: HS08TES, solvedhs08tes 1 # ATM2 import sys3 4 withdraw, balance = map (float, sys. stdin. readline (). strip (). split () # strip () is used to remove the ending \ n symbol 5 6 if int (withdraw) % 5! = 0 or balance  

For details about how to implement TCP server and client in python, pythontcp This example describes how to implement the TCP server and client in python. Share it with you for your reference. The details are as follows: TCP server program (tsTserv.

Method to handle URLError exceptions in Python, pythonurlerror 1. URLError First, explain the possible causes of URLError: No network connection, that is, the local machine cannot access the Internet The specified server cannot be connected.

For more information about how to use cookies in Python, see pythoncookie. Hello everyone. In the previous section, we studied the exception handling problem of crawlers. Next, let's take a look at how to use cookies. Why use cookies? Cookie refers

This article introduces some advanced usage of Python's Urllib library, pythonurllib Library 1. Set Headers Some websites do not agree that the program will directly use the above method for access. If there is a problem with identification, the

In the Python Django framework, use a stream response to generate a CSV file, In Django, streaming response to StreamingHttpResponse is a good thing that can generate a large file in a fast and memory-saving manner. Currently, Eventsource is used

Note the following when using closures in Python programming: I wrote this blog, which originated from the Tornado contact group question. how to use outer variable in inner method is of great reference value to the answers from foreigners. The key

Operations on two-dimensional arrays in Python: Two-dimensional arrays in python You need to use a two-dimensional array in the program. You can find this usage on the Internet:  # Create an array with a width of 3 and a height of 4 # [[, 0], # [, 0]