Python

I 've been busy with other jobs recently. I only found that I haven't posted a blog post for a month. I 've been here for the first time in the past two months. ------------------------------------------- Requirement: Recently, I have to refer

The face detection function of opencv is good in general. Ubuntu provides the python-opencv package, which can be used to conveniently implement face detection.Code. Install Python-opencv before writing code: $ Sudo apt-Get install Python-opencv

Python Study Notes-first knowledge of Python 1. Install python3 The latest Python version 3.3.2 is available on the official website! Check whether python is installed on your computer. Python 2 is pre-installed on Linux and Mac OS, but not

Python's functools module provides three interesting functions: partial, update_wrapper, and wraps. Partial function, which can re-bind the optional parameters of the function to generate a callable partial object. The update_wrapper function copies

Python's functools module provides three interesting functions: partial, update_wrapper, and wraps. Partial function, which can re-bind the optional parameters of the function to generate a callable partial object. The update_wrapper function copies

In general, Python's GC garbage collection mechanism has a set of algorithms that can be used to recycle referenced objects and avoid Memory leakage. However, there is an exception: the _ del _ method is overwritten. Example: #-*-Coding: UTF-8-*-#

Python: whetting your appetiteIf you do much work on computers, eventually you find that there's some task you 'd like to automate. for example, you may wish to perform a search-and-replace over a large number of text files, or rename and rearrange

ImgDownloaderimport win32com.client,time,win32inet,win32file,osclass ImgDownloader: def __init__(self,url,dir): self.__dir=dir self.__ie=win32com.client.Dispatch('InternetExplorer.Application') self.__ie.Navigate(url)

Urllib reads the webpage and then writes the Excel file in Py-Excel. Import urllibfrom xlwt import workbookimport datetimedef fetchdata (): Book = Workbook (encoding = 'gbk') # If the collected data has Chinese characters, add this sheet1 = book.

The maximum number of matching regular expressions, 65535? Re. debug can query the maximum number of matches. In fact, it returns the debug information for each RegEx. When compile is used to compile expressions, the latest several are cached.

The code is very simple, with less than 5 k lines. However, the idea is quite good. After we change to non-blocking, the efficiency can be improved a lot. Especially considering that modern web apps need to communicate with other HTTP servers,

1. Install stackless python2.5 Address: http://www.stackless.com/binaries/python-2.5.2-stackless.msi Note: If you need to install it on the Vista system, you must use version 2.6. Otherwise, NTDLL. dll will run incorrectly. 2. Download The stackless

Python is a very good scripting language. It is flexible and lightweight to use and can communicate with local languages such as C/C ++. The following describes how to install and use python in windows. I personally prefer to use version 3.x

Document directory Pybloom 1.0.2 Http://bitworking.org/news/380/bloom-filter-resources The bloom filter, conceivedBurton H. BloomIn 1970, is a space-efficient probabilistic data structure that is used to testWhether an element is a member of

Search for help Dir (string) # You can view all the member variables and functions of the module. # The following code separates variables and functions into a list.For FV in Dir (string ):Name = "string. % s" % FvIf callable (eval (name )):Funorc.

This function is said to be called a function generator. I did not see it in the Document. Later I read a usage on the Internet and found that it is actually equivalent to the Return Statement. The following code:   def addlist(alist): for

This is really not easy to understand, first go to the Code, this code is a usage of the function decorator. Let's look back. #!/usr/bin/env python   from time import ctime, sleep   def tsfunc(func): def wrappedFunc():

Python struct module The main content from: http://blog.163.com/sywxf@126/blog/static/50671196201011319507710/   Simply read a binary file:  # coding: utf-8   import struct import sys binfile=open('test.bin','rb') buf = binfile.read()

Execute multiple Test suites (suites) Chaining together a suite of tests Unittest makes it easy to chain together test cases into a testsuite. A testsuite can be runJust like a testcase, but it also provides additional functionality to add a single

Def lastpos (findstr, mystr ):# GP. addmessage ("query =======:" + findstr + "," + mystr)Num = Len (mystr)# GP. addmessage ("Length:" + STR (Num ))Findnum = Len (findstr)# GP. addmessage ("length, findnum =" + STR (findnum ))I = num-findnum# GP.