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range(n, 5):... print eachNum...>>> countToFour1(2)Traceback (most recent call last): File " 11-2.Function. Create a function and return the sum and product of two numbers. [Note] the question is modified according to the English version. [Answer] The Code is as follows: def func(a, b): c = a * b d = a + b return c, da = raw_input("Please input the first number: ... ")# From www.cnb

The lowercase master that returns a string' Please Enter your name ' . Lower () ' Please enter your name ' Replace returns a string when a string match is replaced' This is a test '. Replace ('is','AAA')' THAAA AAA a test'spilt is used to split a string into a sequence, which is a join inverse method ( a very important string method )>>>'1+2+3'. Split ('+')['1','2','3']>>> >>>'/usr/bin/env'. Split ('/')["

function that executes the business. The adorner syntax allows us to provide other parameters, such as @decorator (a), when called. This provides greater flexibility for the authoring and use of adorners.#Adorner with ParametersImport TimedefLogger (flag=""): defShoe_time (f):defInner (*x,**y): Start=Time.time () F (*x,**y) End=time.time ()Print(end-start)ifFlag = ="true": With open ("Log Records","a", encoding="UTF8") as G:g.write ("The value is:%s time is:%s\n"% (f (*x), (end-start))) retu

Python Intensive Training Note (7)-use the deque queue and save the object as a file, The deque object in the collections module is a queue with the first-in-first-out principle for normal queues. We can use this object to save data. For example, the system starts to randomly roll a game with a guess number ~ Then, the keyboard starts to receive your input. The number system will tell you whether the input

I used Python to write a game. Getting started with pygame (7): Collision Detection and pythonpygame We have already completed most of the aircraft wars, but there is still no way to officially launch the game, because the bullets cannot be knocked out of the plane. Only after this is done can the game be basically formed. Today's content is very simple, that is, the collision detection, and control the dis

Python built-in functions (7) -- bytearray, pythonbytearray English document: Classbytearray([Source[,Encoding[,Errors]) Return a new array of bytes.bytearrayClass is a mutable sequence of integers in the range 0 bytesType has, see Bytes and Bytearray Operations. The optionalSourceParameter can be used to initialize the array in a few different ways: If it isString, You must also giveEncoding(And optional

(' Welecome to HOME page ')Index ()#wrapper ()#Home ()Add more adorners:#add more adornersImport TimeImportRandom#Decorative DevicedefTimmer (func):defwrapper (): Start_time=time.time () func () Stop_time=time.time ()Print('run time is%s'% (stop_time-start_time)) returnwrapperdefAuth (func):defdeco (): Name=input ('Name:') Password=input ('Password:') ifName = ='Egon' andPassword = ='123': Print('Login Successful') func ()#wrapper () Else: Print('Login Err')

Chapter 2 of Python natural language processing exercises 12 and Chapter 2 Problem description: CMU pronunciation dictionary contains multiple pronunciations of certain words. How many different words does it contain? What is the proportion of words with multiple pronunciations in this dictionary? Because nltk. corpus. cmudict. entries () cannot use the set ()

example width = input('Enter number here:')price_width = 10item_width = width - price_widthheader_format = '%-*s%*s'content_format = '%-*s%*.2f'print '='*widthprint header_format % (item_width,'Item',price_width,'Price')print '-'*widthprint content_format % (item_width,'Apples',price_width,0.4)print content_format % (item_width,'Pears',price_width,0.5)print content_format % (item_width,'Banana',price_width,8)print content_format % (item_width,'Tomato',price_width,6)print '='*width Outp

Problem: Use regular expressions to match text patterns to identify the longest possible match to find the shortest possible matchWorkaround: Add after the * operator in the matching pattern. ModifierImportRe#Sample TextText ='computer says "No." Phone says "Yes."'#(a) Regex that finds quoted Strings-longest matchStr_pat = Re.compile (r'\"(.*)\"')Print(Str_pat.findall (text))#(b) Regex that finds quoted Strings-shortest matchStr_pat = Re.compile (r'\"(.*?) \"')Print(Str_pat.findall (text))>>> ==

[Python development practice] Windows 7 + VirtualBox + Ubuntu environment configuration, virtualboxubuntu 1. VirtualBox Installation Refer to the general installation method. VirtualBox 4.3.14 for Windows hosts: http://download.virtualbox.org/virtualbox/4.3.14/VirtualBox-4.3.14-95030-Win.exe 2. Install Ubuntu server Ubuntu-14.04-server-amd64 (http://www.ubuntu.c

The "1" getattr () function is Pythonthe core function of introspection"2" Python'sIntrospection: Python can view functions or module information stored as objects in memory, as well as related operations. "3" Related functions: GetAttr (), SetAttr (), delattr (), hasattr () GetAttr related usages are described below: GetAttr is used to return an object property, or the method can be visually discerned by a

Model class Design User UserInfo Uname Upwd ... Isdelete Product Category TypeInfo Ttitle Isdelete Product Goodsinfo Gtitle Gtype Gprice Gdesc Isdelete Shopping Cart Cartinfo User Goods Count Order OrderInfo User Ototal State Order Details Orderdetailinfo Order Goods Count Price

▲ Custom Class Python has a number of special-purpose functions like __slots__ that can help us customize the class. Official Document Link: https://docs.python.org/3.4/reference/datamodel.html#special-method-names 1) __str__ and __repr__ The sample code is as follows: >>>classStudent (object): ...def __init__(self, name): ... self.name=name ...>>> stu1 = Student ('Jack')>>>STU1__main__. Student Object at 0x01740e70>>>>Print(STU1)__main__. Student Obj

See this topic you may guess what I want to say next, oh, yes, that is the list of these two different versions of the But not! You'll find that Python has two major versions, Python2 and Python3, but Python is different from other languages, backward-compatible, and Python3 is backward-compatible, but most of the components and extensions are based on Python2, Here's a summary of the difference between Py

configuration file content: 　　　　　　　　　　 　　　　　　　　　　 Delete the content of an element in the configuration file: 　　　　　　　　　　　　 7> hashlib module: used for encryption-related operations. 3 replaces the md5 module and sha module, and mainly provides SHA1, shaloud, SHA256, SHA384, SHA512, and MD5 algorithms; the entered content is the same, and the encrypted result is the same; the encrypted content cannot be reversed;Md5 encryption example: 　　　　　　　　 Exampl

Python built-in type (2) -- Boolean operation, python Boolean In python, the bool operators are sorted by priority.or,and,not, Whereor,andShort-circuit Operator notTest the true value of the expression before obtaining the inverse value. notThe operator has only one expression,notTest the true value of the expression a

Python Regular Expression 2, python Regular Expression Matching phone number: 1 >>> import re 2 >>> pattern=r'\d{3,4}-?\d{8}' 3 >>> re.findall( pattern, '021-12345678' ) 4 ['021-12345678'] 5 >>> re.findall( pattern, '02188888888' ) 6 ['02188888888'] 7 >>> re.findall( patter

The path to Python development article 2 (1) _ data type built-in function usage, the path to python GrowthData Type built-in function usage int There are many built-in methods. Here is a summary. (1) _ abs _ (...) returns the absolute value of x.# Returns the absolute value of x !!! All are double underscoresX. _ abs _ () For example:#! /Usr/bin/pythonPrint "abs

framework of the entire Python learning process and using the book "Python core programming", almost all Python knowledge points are covered, but for beginners like me, I still cannot master her entire learning framework and process. If we read this book roughly, we can break down her framework and divide it into modules so that we can be aware of it. The follow