python quiz

parameter is the number of values you want to select. Wronganswers = Random.sample (wronganswers, 3) answeroption = Wronganswers + [Correctanswer] Random.shuff Le (answeroption) # writes the problem Quizfile.write ('%s ') in the file. What's the capital of%s?\n '% (questionnum + 1, States[questionnum])) for I in range (4): Quizfile.write ('%s.%s\n '% (' ABCD ' [i], answeroption[i])) quizfile.write (' \ n ') # write an answer in the answer volume Answerkeyfile.write ('%s.%s\n '

copied.What is a negative index in Python?The sequence index in Python can be either positive or negative. If it is a positive index, 0 is the first index in the sequence, and 1 is the second index. If it is a negative index, (-1) is the last index and (-2) is the second-lowest index.23) How do I convert a number to a string?You can use the Self-function str () to convert a number to a string. If you want

CSDN Knowledge Small TableDaniel Special Mess HallSmall range, high quality, online communication QAParticipating guests Knowledge Base Guest editor Ihaibo, Didi travel engineer, former Dragon Graph Dragon Chart Game data Analysis Department technical director. CSDN Blog expert, senior Python/golang back-end engineer, familiar with network programming, focus on data analysis, web development and web security.

Here is a topic: A = 3 b = A A = 5 Print (A, B) What is the value of the last output of the program, A/b? Think about it first, and then we'll take a look at the correct answer: The value of correct answer a is 5, the value of B is 3, why doesn't the value of B change with the value of a? Let's analyze Why: Here we first introduce a function ID (), which can look at the memory address of the variable; OK, here's the analysis: Split the program, assign 3 to

ConceptThere is a concept called thread-local variables, generally we are in multi-threaded global variables will be locked processing, this variable is a shared variable , each thread can read and write variables, in order to maintain synchronization we will do the yoke processing. But after some variables are initialized, we just want them to exist in each thread, equivalent to shared variables within a thread, and the threads are quarantined . A class called local is provided in the

Python is very powerful because of its large three-way library, the resources are very rich, of course, there is no lack of audio libraryAbout audio, Pyaudio This library, can enable the microphone recording, can play audio files and so on, at this moment we do not understand the other functions, only to understand how it realizes the recordingFirst of all, Pip a PyaudioPip Install PyaudioI. Pyaudio realization of microphone recordingThen create a py

Database quiz question 2 and database quiz question 2 Questions on Century jiayuan Network 1. count the number of persons in each category (type: Select type, count (type) from tab_user group by type; 2. Count the total score of five people: Select sum (score) from tab_user; 3. Select the top three according to the score, and sort them in reverse order: Select * from 'tab _ user' order by score des

Mysql quiz and mysql quiz 1. the user logon log table xes_user_login_logs is as follows: (1) retrieve user IDs that have been logged on more than twice (SQL statement) Select user_id from vvt_ceshi group by user_id having (count (user_id)> 1; HAVING is like the WHERE condition, used to retrieve a dataset according to specified requirements. However, the WHERE clause is generally used to specify condit

storage. There are many libraries on GitHub, especially in terms of mining and storage. (There are many domestic, such as: Pholcus (Reptile), TIDB (storage), etc.). There are a lot of mass storage, such as Infuxdb, Cockroachdb, Tidb. Other aspects of GitHub also have a lot of open source projects, not listed. However, commercial projects are rarely present. In the big Data World, Go and Python are also very good combinations. Go a

650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M00/85/DE/wKioL1etMTKR6J7EAAJ3F9APqj8826.jpg "title=" 710-420.jpg "alt=" Wkiol1etmtkr6j7eaaj3f9apqj8826.jpg "/>The four-year-old Olympic Games are Rio in full swing, and Chinese Olympic athletes are vying for the highest glory of the Olympic Games. In this 8 months of national Carnival , in addition to the Chinese Olympic athletes refueling, applause, of course, there is a passionate prize quiz! P

Building a quiz Engine 1 In this lesson, you will begin in to see the creation of the quiz engine. This will allow you to exercise the skills developed in the earlier videos. Duration 22 minutes, 32 seconds Watch video Visual Basic Visual C # Download video Visual Basic Visual C # Download Project Visual Basic Visual C #

the "sub-process" level of abstraction, what object-oriented design, functional programming almost impossible to talk about. People in the production and learning process will cause a number of needs, thus need to produce some tools to support learning and production, and "language" is one such tool. Only by using high-level languages can people effectively abstract the real world into things that computers and machine boxes recognize.Today, there are a number of mainstream languages that can b

+ b.tC. C = a.t + bD. C = a.t + b.t9. Please consider the following code: C results? (If you are unsure, run this lookup in Python at any time). AA = Np.random.randn (3, 3= NP.RANDOM.RANDN (3, 1= a*bA. This will trigger the broadcast mechanism, so B is copied three times, becomes (3,3), * represents the matrix corresponding element multiplied, so the size of C will be (3, 3)B. This will trigger the broadcast mechanism, so B is duplicated three times,

How do I repeat a string?In Python, we can repeat a string by multiplying it by a number. In Java, we can repeat strings through the repeat () method of the StringUtils class in the Apache Commons lang package.? 123 String str = "ABCD"; String repeated = Stringutils.repeat (str,3); AbcdabcdabcdHow do I count the number of occurrences of a character in a string?Use the StringUtils class in the Apache Commons lang package.How do I convert a string to an

Quiz 1Question 1The American Community Survey distributes downloadable data about the states communities. Download The 2006 microdata survey about housing for the state of Idaho using Download.file () from here:Https://d396qusza40orc.cloudfront.net/getdata%2Fdata%2Fss06hid.csvand load the data into R. The code book, describing the variable names are here:Https://d396qusza40orc.cloudfront.net/getdata%2Fdata%2FPUMSDataDict06.pdfHow many properties is wo

react.js Small Project--Random quiz module Function Introduction : The following figure, a paper on the Web page, the paper by simple questions, general questions, problems by proportional composition, and each question is from the corresponding test questions randomly selected, and correct the topic will not appear again. realize the idea: OK module: Start button, quiz module, topic Component, submit but

Quiz One: fill in the blanks: all the default system user names and Passwords are (Shiyanlou) in the lab building environment. Fill in the blanks: in Linux bash, CTRL + A shortcut key is (move the cursor to the input outfit, equivalent to the home key). Judgment: The man printf and man 1 printf functions are equivalent in Linux bash. OK fill in the blanks: in Linux You can use the (groups) command to know which user groups you belong to. Fill in the b

Abstract: The World Cup is just a few days away, with highlights and slots. Xiaobian had to admire the efforts of the staff. A Small World Cup topic, a simple page can also attract netizens. The winning rate is so high that the small series won't be in progress once. The winning mechanism of the World Cup topic is that there are 30 winners in each competition. For a small editor who knows a little bit about football, this probability is quite high. So every morning, I make a solemn prediction,