Python

:    :     (nameage):  .name = name  .__age  = age   (say):         (% say)       ():         (%  (. name.__age))          .__speek ()      ():   a = a () A.speek () (A.name)    (a._a__age)   a._A__age +=  (a._a__age)   (a):     ( Nameagesex):       

#Definition forsingly-linked list.classListNode (object):def __init__(self, x): Self.val=x Self.next=Noneclasssolution (object):defaddtwonumbers (self, L1, L2):""": Type L1:ListNode:type l2:ListNode:rtype:ListNode"""Nhead=ListNode (0) Carry=0

What is an iterator?Iterators are simple objects with the next method, and of course the __ITER__ function is implemented. Iterators can iterate over a sequence of values, and when there is no available iteration, the next method throws an

Adorner modeAdorner mode (Decorator pattern) allows you to add new functionality to an existing object without changing its structure. This type of design pattern belongs to the structural pattern, which is a wrapper as an existing class.This

First, for numbers and strings, whether by assignment, shallow copy or deep copy, the same value will always use the same memory address,does not re-open space in memory. (e.g., brief analysis)1 #for numbers and strings, whether by assignment,

Requests is a Python HTTP client library, similar to URLLIB,URLLIB2, why use requests instead of URLLIB2? This is stated in the official documentation: Python's standard library URLLIB2 provides most of the HTTP functionality needed, but

1. Test the code with the Doctest module[Email protected] tmp]# vim qwe.py#!/bin/env python#!-*-Coding:utf-8-*-DEF ABC ():Print 4;[Email protected] tmp]# vim doctest.py#!/bin/env python#!-*-Coding:utf-8-*-Import doctest,qwe #加载doctest模块, loading qwe

function : Reusable blocks of code simply put: The statements that we use are used to execute the statements each time a name is called; function definition:Create a function using the keyword DEF statementDef sayHello (): Print ("Hello

There is a list of attendance staff, each time to increase the deletion of staff too troublesome, find python simple write a script to manage,01, the implementation of personnel additional operations# Add AMD Delete card #coding =utf-8wfile=open ('

Import socketimport paramikoimport threadingimport syshost_key = paramiko. Rsakey (filename= ' Test_rsa.key ') class server  (Paramiko. Serverinterface):     def __init__ (self):         self.event = threading. Event ()     def check_channel_request

Let's look at a very simple example.1 #Coding:utf82 ImportQueue3 #queue is the meaning of queues4Q=queue.queue (maxsize=10)5 #Create a Queue object6 forIinchRange (9):7 q.put (i)8 #put element9 while notQ.empty ():#detects if an element is

See the code example firstIn [1]: a = {' A ': ' abc ', ' B ': ' BCD '}in [2]: in [2]: Import Jsonin [3]: Print Json.dumps (a) {"A": "abc", "B": "BCD"}in [4]: Print Json.dump (a)-------------------------------------------------------------------------

#-*-coding:utf-8-*-"""Created on Thu Jul 09:36:59 2015@author:dapenghuang""" fromConfigImportconfig_generalImport TimeImportSYSImportOSdefGetfiledir (layer=1): File_full=Os.path.abspath (sys.argv[0]) floor=file_full.split (os.sep) Filedir="'

Threads and processesThe program is equivalent to the factory, the process equivalent to the workshop, thread equivalent workers. There are often multiple workshops in a factory, and multiple workers work in parallel on one shop floor.Share rooms

Python file (file) methodThe file object is created using the Open function, and the following table lists the functions commonly used by file objects: Serial Number Method and Description 1 File.close ()Close

Python for ICs ICS Chapter 1 Regular Expression (2), pythoninformatics Note: The original article is from Python for Informatics by Dr Charles Severance. 11.1 regular expression character match We can use many other special characters to create more

Python installation and use of redis, python installation of redis This article describes how to install and use redis in python. We will share this with you for your reference. The details are as follows: 1. Installation Okay, I admit that I will

How to generate a random password using Python? The standard instance shares the implementation process of generating random passwords in Python for your reference. The specific content is as follows: I wrote a program mainly used to check the empty

Python summarizes the methods for downloading files under the HTTP protocol, This article describes several common methods for downloading python files, including htttplib2 and urllib. 1. Simple File Download Use htttplib2 with the following code: h

Python learning notes (conf configuration file ), Find a problem in optimizing your own framework There are many parameters to be used in many classes, and whether there are any functions that can help optimize these functions Here I thought of