Python

1. delete an element Names = ['Thy ', 'jj', 'God', 'Dog'] Del Names [1] ---> ['Thy ', 'God', 'Dog'] 2. Clip assignment Names [1:] = List ('Thy ') ---> ['Thy', 't', 'h', 'y']Names [2: 2] = [] ---> ['Thy ', 't', 'y']However, you must note that

This article describes the rapid use of the logging module, If you need in-depth customization, please refer to (http://docs.python.org/2/howto/logging-cookbook.html) Import logging. basicconfig (format = '[% (asctime) S]' + logging.

ArticleDirectory I. What you need to know when using Python Ii. Install activepython 3. Install python from python.org (http: // www. P ython.org /) Iv. Summary I. What you need to know when using Python There are two options

IfProgramDirectly use the python module exported by this program, you do not need to export it to the PYD library. For example, if program A has its Python extension module named exta, after calling the initialization function initexta () of the

Python iterator and Generator I. iteratorsThe iterator is only a container object and implements the iterator protocol. It has two basic methods:1) Next MethodReturns the next element of the container.2) _ ITER _ MethodReturn iterator itself The

Speaking of global variables and local variables today, the foreign teacher said that global variables are like stars in Hollywood and everyone knows. Local variables must be declared before they can be used. Otherwise, people do not know. # The

1. Attribute access Class rectangle: def _ init _ (Self): self. width = 0 self. height = 0 def setsize (self, size): self. width, self. height = size # In my opinion, tuple is automatically formed. def getsize (Self): return self. width, self.

Concise Python tutorial --- 15. More Python content   Special Method Some methods have special meanings in the class, which has been mentioned earlier. For example, the _ init _ method and the _ del _ method. These special methods are very useful.

Coding the matrix: Linear Algebra Through Computer Science Applications This is a course for implementing matrix operations using python. For the first assignment, I felt that python was greatly improved and various data types were used.The Code is

When we use the open () function to open a file, there are several open modes. 'R'-> Read-Only 'W'-> write-only. If the file already exists, it is cleared. If the file does not exist, it is created. 'A'-> append, write to the end of the file 'B'->

In order to learn English, I converted the movie downloaded from the Internet into a pure MP3 file and put it in itouch, so that I can directly practice my listening. In addition, I also put the downloaded subtitles in, you can check it when you are

Linux: Import socket import fcntl import struct def get_ip_address (ifname): S = socket. socket (socket. af_inet, socket. sock_dgram) return socket. inet_ntoa (fcntl. IOCTL (S. fileno (), 0x8915, # siocgifaddr struct. pack ('256s ', ifname [: 15])

'''gen_python_api.py generates a python.api file for SciTEThe generated api file includes *) all Python keywords *) all builtin functions *) all module attributesModule functions are represented by their docstring if available,otherwise by the

Test Environment 1: win7 Test environment 2: ubuntu10.04   Install the Erlang Environment 1. Download: http://erlang.org/download.html Download the source code package or win Binary Package as needed. 2. installation: In Windows, there is nothing to

Reprinted from https://gist.github.com/859717133. HTML tags are simply filtered when used <> import restr = "srcdhello"str = re.sub(r']*>','',str)print str # Is there a simpler way to use htmlparser? Regular Expression? Def strip_tags (HTML):

[Reprint] the original address http://blog.sina.com.cn/s/blog_681315fa0100imtk.html If you use python to write a relatively large program, you will certainly use the log system. Especially for dynamic languages like python, many errors can only be

Friends who have used the hashlib library must have encountered the following errors: "Unicode-objects must be encoded before hashing", which means that before performing MD5 hash, data must be encoded. In addition, python of different versions is

Parse XML strings using Python 13:30:28 Add to favorites I want to contribute After checking the web for half a day, the built-in XML. Sax is lightweight and simple. Given that even the simplest examples of code on the Internet

Read and Write excel in Python 10:02:21 let me say a few words Add to favorites I want to contribute Read and Write excel in PythonBecause I am tired of manual operations on Excel tables, I took the time to learn how to operate

Python file operation instance Source: EDIT: EXP Time: 2012-09-14 [Python]#-*-Coding: UTF-8 -*- Import OSImport shutil #1. Path operations: Judgment, acquisition, and deletion #1. Get the current working directory, that is, the directory path for