python exit program gracefully

Print(infos) the Writebypickle (infos,filename) the delinfos the - defMain (): in whileTrue: theCommand = input ('\n==========menu==========\n1 scan\n2 search\n3 update\n4 delete\n5 exit\n') the ifCommand = ='1': About Scanall () the elifCommand = ='2': the Search () the elifCommand = ='3': + Update () - elifCommand = ='4': the Delete ()Bayi Else: the sys.exit () the Print('Versioninfo:',

#作业3: Shopping Cart Program#启动程序后, let the user enter the payroll, and then print the list of items#允许用户根据商品编号购买商品#用户选择商品后, check whether the balance is enough, enough to direct debit, not enough to remind#用户可以一直购买商品, you can also exit at any time, when you exit, print the goods and balances you have purchased# ideas. part1# to use formatted output# to use the lo

[userid][' youhave ')) show_balance (Money) elifinput==2: withdraw (userid,**userinfo) elifinput==3: Save_money (Userid,**userinfo) elifinput==4: transfer (Userid,**userinfo) elif input==5: shopping (Userid,**userinfo) elifinput==6: history_list (userid) elifinput==7: sys.exit (0) else:print ' input error ' else: print "\033[1;31;40mtheuseridisnotvaild , pleasere-input:\033[0m " continueatm.py as follows: #!/usr/bin/python#-*-coding:utf-

#!usr/bin/env python#-*-coding:utf-8-*-# author:zhuyuzhe ' ' Shopping applet user starts by entering funds before user starts the program and prints the product list iphone 4999mac 9999 allow users to choose the purchase of goods allows users to constantly buy a variety of products to detect whether the balance is sufficient, if sufficient, direct debit, otherwise the printing balance is not enough to allow

The code resides on GitHub: Https://github.com/dachenzi/UserLoginScriptBasic Requirements Let the user enter the user name password Show welcome message after successful authentication Exit the program after a three-time error Upgrade Requirements Can support multiple users login (prompt, through the list to save multiple account information) After the user 3 authenticatio

Job Requirements:Basic requirements: Let the user enter the user name password Authentication successful display welcome information after the error three to exit the program upgrade requirements: can support multiple users login (prompt, through the list to save multiple account information) Users 3 times authentication failed, quit the program, restart the

, authentication through call Admincenter module, management operation (4), input Q , program termination, exit program 4, Menu 1:shopping Mall (1), load User_auth () function for user authentication, the user authentication through the shopping center (2), enter a value of 1, load shopping. Shopping_mall () function, for the purchase of goods, the purchase of go

%d game in the 5 innings.'%x) the Print('I'm sorry, ya lost the king of gambling tournament, go home and practice 20 years, come again! ') -Input'tap ' Enter ' to exit the game') Wu Learning Python is too painful, completely look at the feeling of the heavenly book, good abstraction, or first directly according to their own ideas to do things, not the words to check from the dictionary, feel mor

Python Code Note points:1. Note Indent2.if, while and other statements remember to add a colon:3. Note the use of spaces4. When writing code through PYCHARM, note the prompt informationData:goods = [{"Name": "Computer", "Price": 1999},{"Name": "Mouse", "Price": 10},{"Name": "Yacht", "Price": 20},{"Name": "Beauty", "Price": 998},......]Functional Requirements:Basic requirements:1, after starting the program,

Product_list = [("iphone", 5800),("MOC Pro", 9800),("Bike", 800),("Coffee", 31),("Linux book", 80)]Shopping_list =[]Salary = input ("Input your Salary:")ifSalary.isdigit ():# used to determine if the input string is a number form true if yessalary = Int (salary)While True:# for item in Product_list: #for item in range product_list: wrong spelling# Way One: print (Product_list.index (item), item) #通过 Index to display its subscript for the product number forIndex,iteminchEnumerate (product_list):#

A free text messaging program on Saipan S60V3 written in Python in, pythons60v3 #-*-Coding: UTF-8-*-import appuifw2 as appuifwimport e32import into key_codesimport uitricksimport contactsimport messagingimport envyimport socketimport inboximport timedef cn (str): return str. decode ("UTF-8") class main: def _ init _ (self): self. ap = socket. access_point (1) socket. set_default_access_point (self. ap) self

Python Shopping Cart ProgramData structure: goods = [{"Name": "Computer", "Price": 1999},{"name": "Mouse", "Price": 10},{"name": "Yacht", "Price": 20},{"name": "Beauty", "price" : 998},......] Functional Requirements: Basic requirements: 1, after the start of the program, enter the user name password, let the user enter the salary, and then print the Product List 2, allow the user to purchase goods accordin

Many do not say, on the code!!!#!/usr/bin/env python#coding: Utf-8ImportUrllib,re,jsondefInput_content (URL):#receive aURL (translationAIP) whileTrue:Content =Raw_input('Please enter the translated content:')#What the user entersifStr. strip (content) = ="':#If the user entered the content is emptyContinue#into the next round of circulationelifContent = =' Q 'orContent = =' Q ':#if the input isQorQthen quit the programExit()Print'\033[31mbeing transla

(AB) del AB print ' succlessful update! ' print ' ' \This is prints files to the standard output.Any number of the files can be specified.Options include:[1]: Search your friend ' s email from Friendsbook[2]: Add your friend ' s email to Firendsbook[3]: del your friend ' s email from Firnedsbook[4]: Alter your friend ' s email from Friendsbook[5]: All friends List[6]: Exit the program''' Num=raw

#Readme:#Ne_zha#blogger Address:www.cnblogs.com/ne-zha#Requirements:#1. Start the program, let the user enter the deposit, and then print the product list#2. Allow users to select items based on their product number#3. After the user selects the product to check whether the balance is sufficient to deduct the money, satisfies the prompt deduction the success, does not satisfy the prompt balance insufficient#4. You can

#!/usr/bin/env pythonImport OS#导入功能模块url = "/tmp/"#变量定义def check ():#函数定义 whileTrue:#一直循环 prompt the user to enter the correct file name to createOs.system ("cd/tmp")d_com=raw_input ("please input filename")#将用户输入的值赋给变量做判断if os.path.exists (url+d_com) = = True:#调用功能模块判断文件是否存在print "error!! File had existed "#输出判断结果Continue#存在时重新输入文件名Else:While True:#当要创建的文件不存在M = open (url+d_com, ' a ')# Prompt the user to enter content into the created fileA = raw_input ("Piease input what ' s want Add") m.writ

This article mainly introduces how to compile screen programs in Python. This article explains how to use the open source program pywin32 to implement screen and read clipboard functions, if you need it, you can refer to a lot of Windows operations in the program you are writing and check a lot of information. When I saw the clipboard operation, I thought of a sm

1. First of all, it is the collection of [camera images] of video data. Generally, we can use vfw to implement it in vc or vb. I am not using this library well, so I have never used it very much. now we use the python videocapture library, which is easy to use as follows: Copy codeThe Code is as follows:From VideoCapture import DeviceCam = Device ()Cam. setResolution (320,240) # Set the display resolutionCam.saveSnapshot('demo.jpg ') # capture and sav

-dimensional list becomes a two-dimensional list, the two list changes at the same timeThis is a shallow copy, cloning only the first layer listThe second list is a reference to the first listBased on the shallow copy, modify the copy out of the list, you can implement the concept of similar inheritanceDeep copyImport CopyCopy.copy (a_list): shallow copy, same as A_list.copy ()Copy.deepcopy (a_list): Deep copyDon't use it. Large amount of data memory consumptionTwo-dimensional listEach element i