Python

1. Counter (counter)Counter is a supplement to the dictionary type that is used to track the number of occurrences of a value.Tip: Have all the functions and functions of the dictionaryExample ①Collectionsc1 =collections. Counter () C1Operation

Novice Python developers often find a lot of Python functions used in the yield keyword, however, with the yield of the function execution process is not the same as the normal function, yield exactly what to do, why to design yield? This article

CommonAll have three parameters,CMP user-defined (specified function), each element will be called, efficiency is not key highKey a function with a parameter to extract the comparison value for each elementReverse=true FlipSortThe sort action object

1. The priority queue in Python, priorityqueue usage: the smaller the number, the higher the priority, the sooner it is taken out fromQueueImportQueue fromQueueImportPriorityqueueprioqueue=priorityqueue () prioqueue.put (1,'hahaha')) Prioqueue.put (5

Huawei uses expect to get the MAC address list of the WLAN inside the AC, run the script, and the information will be output to the screen.1get.switch.wlan.grep.mac.sh Filter MAC address with regular expression, save pure Mac to file2.exception.py

CollectionFeature: A Collection object is a set of unordered, hashed values: A collection member can be a key to a dictionary, and a collection cannot be indexed by numbers, unlike lists and tuples. Additionally, the elements in the collection

The Python Stringio class is used to handle strings, and because they operate like file operations, they can be considered as in-memory files.1. Create Stringio2. Common operation:Write,writelines, GetValue, Seek, ReadLine, ReadLines>>> from

ObjectiveFor me, every interview was a way for me to examine myself and test myself. Every time I prepare for an interview, and I am asked by the interviewer, I find that I am not good enough in Python. At work, you can get growth from other

#-*-coding:utf-8-*-#python#Xiaodeng#python module Htmlparser all URL links on the pageImportUrllib#Myparser Class One" "From htmlparser import htmlparserclass myparser (htmlparser): def __init__ (self): htmlparser.__init__ (self) def handle_starttag

1. Python's variable name begins with a letter, containing letters, numbers, and underscores.2. Python is a dynamic type language, that is, it is not necessary to declare the type of a variable beforehand. The type and value of the variable are

Http://www.cnblogs.com/wupeiqi/articles/4963027.htmlhave been busy recently, this decision to take time to write the blog well. Blog Benefits A lot here will not say, write.The main content of today's study is the use of adorners, recursive

Lambda expressionWhen learning conditional operations, for simple if else statements, you can use the ternary operation to indicate that:#Common conditional Statementsif1 = = 1: Name= ' Luotianshuai'Else: Name='Shuaige' #Ternary OperationsName

#-*-coding:utf-8-*-classMyClass:"""A Simple Example Class"""I= 12345def __init__(Self, L, R): Self.data=[] SELF.L=L SELF.R=Rdeff (self):return 'Hello World'Print(MYCLASS.I)Print(MyClass.__doc__) x=myclass ()Print(X.data)Print(X.L)classBag:def __init_

Once mistakenly into this door, from the dust of the empty 、、、、Procedure this road, when really long road 、、、These two days to find a book, called "Stupid method of the third version of Python," the whole case, feeling very good. Need to download

It turned out to be ruby, not too full, and now it's rewritten. Filter related items by time#!/usr/bin/env pythonimport osimport reimport timeimport tarfileimport stringbak _ser =  "[email protected]" tar_dir =  "/tmp/auto_tar_bak" ext_user =  "/eda/

[Django] The Django site admin supports Chinese display and input settings, djangoadmin Body: The Django site admin supports Chinese Input settings as follows: 1 need to determine your database client and server encoding set to UTF-8, if not,

Download and install django1.8 under WIN7, win7django1.8 Django is automatically installed on pycharm on the company's computer. The home computer is not installed with pycharm, so you can install it manually. Django: https://www.djangoproject.com/

Python path [Part 3]: Python BASICS (part 3) and python 3 INSTRUCTOR: http://www.cnblogs.com/wupeiqiLambda expressions When learning conditional operations, a simple if else statement can be represented by a Trielement operation, namely: # Normal

Compile a plane hitting game in Python (9) In our previous blog posts, we added an increasing difficulty Mechanism for the game, which brought about a problem: when the difficulty level was reached, the enemy planes came overwhelming, our small

Python cluster algorithm-DBSACN instance analysis, pythondbsacn This example describes the Python clustering algorithm DBSACN. We will share this with you for your reference. The details are as follows: DBSCAN:It is a simple density-based clustering