Python

Sometimes we write more than one class, so there can be inheritance between classes and classes.For example:#!/usr/bin/env python#-*-coding:utf-8-*-class father:def __init__ (self): Self.fname = ' FFF ' def func: print ' Father.func ' class Son

Always want to learn python, but also has not learned, before the point of view of the basic things, but the technology to read the basic forget. Recently the customer had a project where the start of the project was to comb the configuration

Second, the document operation Method Daquan1.os.mknod ("test.txt") Create an empty file2.FP = open ("Test.txt", W) opens a file directly and creates a file if the file does not exist3. About open mode:Copy the code code as follows:W: Open in write

to self-employed. To do a backupBefore using CentOS 5.8, I wrote a "Python upgrade to CentOS". Later replaced with CentOS 6.5, the system comes with the Python version is 2.6.6, do not bother to toss. Recently installed Ipython, only to find that

Recursive Reflection OS Module SYS module Hashlib Encryption Module Regular expressions ReflectionThe reflection functionality in Python is provided by the following four built-in functions: Hasattr, GetAttr, SetAttr,

Concepts of processes and threadsProcesses and threads are two very important concepts in the operating system, and for a typical program, there may be several processes, each of which has several concurrently executing threads. A process is the

Stupid way to learn the 39th verse of PythonBefore the third version of the book, yesterday found that the contents of the wrong, eight abs and gave me the fourth edition, this time the content is on. The code for this section is as

The arithmetic operation of the pattern.#-*-Coding:utf-8-*-"" "Created on Wed Sep-11:54:47 2016@author:administrator" "" "" Arithmetic (arithmetic) Operations on Imag Escv2.add (), cv2addweighted () ' Import numpy as Npimport cv2 ' ' There is a

Assign valueMemory address reference, all changes will be synchronizedTest code #coding:utf-8 import copy a=[‘a‘,‘b‘,1,[1,2,3]] b = a #对象赋值，所有改动都会联动 a.append(‘d‘) a[0]=‘aaa‘ a[3].append(4) print a print

NumPy Base: Array and Vector computing NumPy Ndarray: a multidimensional Array objectThis object is a fast and flexible large data set container. You can use this array to perform some mathematical operations on the whole piece of data, which is the

# coding: utf-8#!/usr/bin/env python ' updatedb update local server specified directory/home/upload/de  The LOCATE.DBZ database then locate the command to find the eligible file and output the file name to LOCATE.SRC through the Paramiko module to

If the file path needs to be in Chinese, you need to use GB2312 encoding to add the file header: # coding=gb2312 Create path can use Os.mkdir (Dtspath) Copy files can be first import shutil, after using Shutil.copy (SRC, dstn) File

In a Linux system, messages can be sent with the Mail command, but when sent with an attachment, the attachment is always reported as too large an error. Without knowing how to configure Linux mail, I chose Python for sending messages with

In a Linux system, messages can be sent with the mail command, but when sent with an attachment, the attachment is always reported as too large an error. Without knowing how to configure Linux mail, I chose Python for sending messages with

in the python in development, we often use python class, today through the example and we grilled a class of properties, come together to see it. Class properties1. class definition is present and does not need to be instantiated2. class attributes

Python provides two methods for simple text Detection: file header and cchardet library ], This example describes how to check the text type in Python. We will share this with you for your reference. The details are as follows: 1. According to the

Python is a simple way to get its own Internet IP address. This example describes how to obtain the Internet IP address of Python. We will share this with you for your reference. The details are as follows: # Encoding = UTF-8 # author: walker #

The functions of the _ init _. py file in Python are described in detail, The _ init _. py file is used to convert a folder into a Python module. The package of each module in Python contains the _ init _. py file. The _ init _. py file is usually

Python implements the compression and decompression of gzip large files, This document describes how to compress and decompress gzip files in Python. We will share this with you for your reference. The details are as follows: # Encoding = UTF-8 #

[Python collection] File Operations,File Operation 1. open () function Open () functions are mainly used for file processing. They are generally divided into the following three processes: 1. open the file2. Operation File3. close the file Common