Python

Python does not compel you to program in an object-oriented way (unlike Java)#Coding=utf8classFooclass (object): Version= 0.1def __init__(Self, nm='John Doe'): Self.name=nmPrint('Created A class instance for', NM)defShowName (self):Print('Your name

1 Importos;2 ImportSys;3 ImportTime ;4 5 classDeletelog:6 def __init__(self,filename,days):7Self.filename=filename;8self.days=Days ;9 Ten defDelete (self): One ifOs.path.exists (self.filename) = =False: A

The Pickle module consists of the dumps () function, the loads () function, the dump () function, and the load () function.#pickle. Dumps (' object ') #序列化对象, the return value cannot be read directly#pickle. Dump (' object ', f)

Beginner Python (11)--slicesBeginner Python, mainly finishing some of the learning points, this time is sliced.#-*-coding:utf-8-*- " "' Slice" "L= ['name',' Age','Sex','Address',' Company'] #take the top 2PrintL[0:2] PrintL[:2] #take the

#!/usr/bin/env python#_*_ coding:utf-8 _*_# Mall Warehouse (here in dictionary simulation) goods = {' phone ': 5200, ' camera ': 3500, ' TV ': 2200}buy = {} #显示商品清单def  show_goods ():    print  ' '          ----Commodity Warehouse--------        id  

#!/usr/bin/env python#_*_ coding:utf-8 _*_# defines two sets of data for the relationship test x = {1,2,3,4}y = {3,4,5,6} #交集测试 #x data is in Y too? Print x & y# or X.intersection (y) #并集测试 # Go heavy, remove the repetition and add it together.

Catalogue Python Road "First article": Python Introduction and Getting Started Python Road "Second article": Python Basics (i) Python Road "third": Python Basics (ii) Python Road "fourth": module Python Road "Fifth": Object-oriented and

The initialization of ArrayList in Java, the ability to allocate space, can not be assigned to a ArrayList to another ArrayList, so that is the reference assignment, when a change, the other also changedlist tmp = new arraylist (arrays.aslist (New

Catalogue Introduction HTML Interaction Process DOCTYPE tags-------> tell the browser what HTML or XHTML specification to use to parse HTML documents META tags-------> provides meta-information about pages, such as page encodings, refreshes,

The recent comparison of a series of data, need to use the NumPy and pandas to calculate, but use Python installation numpy and pandas because the Linux environment has encountered a lot of problems on the network is written down. First, the Python

#!/usr/bin/python#coding=utf-8# Loop Design # range function s =  ' Abcdefghijk '                #a  b c d e f g h i j  Kfor i in range (0, len (S),  2): #0  1 2 3 4 5 6 7  8 9 10 11    print s[i]print len (S) #遍历数组S  =  ' Abcdefghijk ' for  (Index, 

Code: Class A (): def Add (self,a,b): return A+bclass B (A): Def sub (self,a,b): Return A-bprint (b (). Add (4,5) )Results:Python 3.5.2 (V3.5.2:4DEF2A2901A5, June, 22:18:55) [MSC v.1900-bit (AMD64)] on Win32type "copyright", "credits" or "license ()"

To prevent two modules from importing each other, the Python default all modules are imported only once, if you need to re-import the module, Python2.7 can be used directly with reload (), Python3 can be used in several ways: Method One: Basic

Tornado version: start_app.py Java code # CODING:GBK Import tornado.web import tornado.wsgi import wsgiref.simple_server import sys import FOR_RMZX RE Load (SYS) sys.setdefaultencoding (' GBK ') class MAINHANDLER_GJJ (Tornado.web.RequestHandler):

Python built-in functions (40) -- map, python built-in Function map English document: map( Function, Iterable, ...) Return an iterator that applies FunctionTo every item Iterable, Yielding the results. If additional

[Reprinted] The python script deletes files that have not been stored for a certain period of time,   1 import os; 2 import sys; 3 import time; 4 5 class DeleteLog: 6 def __init__(self,filename,days): 7 self.filename=filename; 8

Python built-in functions (38) -- list, python built-in 38 list English document: ClassList([Iterable]) Rather than being a function,ListIs actually a mutable sequence type, as incluented in Lists and Sequence Types-list, tuple, range   Note: 1

Python built-in functions (39) -- locals, pythonlocals English document: locals() Update and return a dictionary representing the current local symbol table. Free variables are returnedlocals()When it is called in function blocks, but not in class

Python learning notes 1-metaclass _ metaclass __, metaclass _ Type is actually a meta-class, and type is the rule for creating classes in the meta-class python for all objects created behind python: Suppose you create the Foo class. class Foo(Bar):　　

Python built-in functions (36) -- iter, python built-in 36 iter English document: iter(Object[,Sentinel]) Return an iterator object. The first argument is interpreted very differently depending on the presence of the second argument. Without a