python programming multiple choice questions and answers

For a string, design an algorithm that only makes an inverse adjustment between the words in the string, that is, the string is made up of some space-delimited parts, and you need to reverse those parts.Given an original string A and his length, return the string after the reverse order.Test examples:"Dog loves Pig", 13Back: "Pig loves Dog"Python implementationClassreverse:defreversesentence (self,a,n): #writecodehere Alist=list (A) alist.append (' '

and we have forgotten to use the pro Per idiom in the main module:Code twoImportMultiprocessingImport TimeImportThreadingPrint('Main process Start1')deffunc ():Print('subprocess Start', Time.asctime (Time.localtime (Time.time ())) Time.sleep (3) Print('subprocess End', Time.asctime (Time.localtime (Time.time () ))if __name__=='__main__': #把进程创建放在main函数中P= multiprocessing. Process (Target=func, name='number 1th') P.start ()Print('Main process End', Time.asctime (Time.localtime (Time.time ()))

The server that implements socket communication in Python is complex, and the client is very simple, so the client is basically implemented by the SOCKCT module, and the serviceThere are many modules that can be used for the end, as follows:1, the Client2. Socketserver ModuleIn order to enable multiple clients to access the service and communicate at the same time, the server will use the Socketserver modul

1.1Multiple Inheritance>>> # Max class... class Animal (object):... pass...>>> # Big class... class mammal (Animal):... pass...>>> class Bird (Animal):... pass...>>> class Runnable (object):... def run (self):... print (' Running ... ')...>>> Classdog (mammal, Runnable):-- inherit mammal, Runnable two functions of a parent class... pass...>>> s = Dog ()>>> S.run ()Running ...Mixlnin the design of the inheritance of the class, usually, the main line is a single inheritance, but

Post code, server side:Import socket# s = Socket.socket (socket.af_inet,socket. SOCK_STREAM) host = ' Port = 6074s = Socket.socket (socket.af_inet,socket. Sock_stream) S.bind ((Host,port)) S.listen (1) while 1:conn,addr = S.accept () while 1:print (' connected by ', addr data = CONN.RECV (1024x768) if not data:break conn.sendall (data) conn.close ()Client:Import socket# s = Socket.socket (socket.af_inet,socket. SOCK_STREAM) host = ' Port = 6074s = Socket.socket (socket.af_inet,socket. Sock_strea

ready. Program:#!/usr/bin/python#-*-Coding:utf-8-*-Class Animal (object):Pass# Big class:Class mammal (Animal):PassClass Bird (Animal):Pass#功能Class Runnablemixin (object):def run (self):Print (' Running ... ')Class Flyablemixin (object):Def fly (self):Print (' Flying ... ')# Various animals:Class Dog (Mammal, runnablemixin):PassClass Bat (Mammal, flyablemixin):PassClass Parrot (Bird, flyablemixin):PassClass Ostrich (Bird, runnablemixin):Dog = Dog ()D

This engaged for a day to understand, I am excited to die, OK, directly on the program, read it to understand:Program 1:#coding: U8#a. pyClass A ():def __init__ (self):Self.name= ' Xiaolei 'def get_name (self):Return Self.namedef set_name (self,name):Self.name=namedef print_name (self):Print Self.nameProgram 2:#coding: U8#b. pyFrom a import aClass B ():def __init__ (self,obj):Self.sex= "#self. Temp=a ()Self.temp=objdef set_sex (self,sex):Self.sex=sexdef get_sex (self):Return Self.sexdef print_in