Q5. The output of the following code is 'tiangong@tiangong.edu.cn'. import re pattern = '[a-zlt ? [a-z]*@tiangong.edu.cn' test string = 'tiangong@tiangong.edu.cn' print (re.findall (pattern, test string))

Q5. The output of the following code is 'tiangong@tiangong.edu.cn'. import re pattern = '[a-zlt ? [a-z]*@tiangong.edu.cn' test string = 'tiangong@tiangong.edu.cn' print (re.findall (pattern, test string))

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Q5. The output of the following code is 'tiangong@tiangong.edu.cn'. import re pattern = '[a-zt ? [a-z]*@tiangong.edu.cn' test string 'tiangong@tiangong.edu.cn' print (re.findall (pattern, test string)) =
The top three most popular male names of 2017 are Oliver, Declan, and Henry, according to babynames.com. Write a program that modifies the male_names set by removing a name and adding a different name. Sample output with inputs: 'Oliver' 'Atlas' { 'Atlas', 'Declan', 'Henry' } NOTE: Because sets are unordered, the order in which the names in male_names appear may differ from above. Code writing challenge activity demo 461710.3116374.qx3zqy7 1 male_names 2 name_to_remove = input() 3 name_to_add=input() 4 = 11 { 'Oliver', 'Declan', 'Henry' } 5 6 7 print (male_names) Your solution goes here '''
Write a function get_total_price(class_list) that takes in a list of class callnumbers and outputs the total price of all textbooks in the class list. Use the catalog list ofdictionaries in the provided catalog.py file to look up a variety of information about abookstore catalog. Hint: To access the file from within your solution, you should add an import catalog call tothe top of your Python file.by calling catalog. catalog. this is the catalog file: csci = {"abbreviation":"CSCI", "department":"Computer Science","classes": [{"number": "1133", "textbook": "Programming in Python", "price":60.00},{"number": "3081W", "textbook": "UML Distilled", "price":45.00},{"number": "4041", "textbook": "Introduction to Algorithms", "price":70.00},{"number": "4511W", "textbook": "Artificial Intelligence", "price": 159.99},{"number": "5511", "textbook": "Artificial Intelligence", "price": 159.99}]} chen = {"abbreviation":"CHEN", "department":"Chemical Engineering","classes": [{"number": "3101",…
msleep**** For this assignment, you must name your R file msleep.R (using Rstudio) For all questions you should load tidyverse. You should not need to use any other libraries. Load tidyverse with suppressPackageStartupMessages(library(tidyverse)) The actual data set is called msleep Round all float/dbl values to two decimal places. If your rounding does not work the way you expect, convert the tibble to a dataframe by using as.data.frame() All statistics should be run with variables in the order I state E.g., “Run a regression predicting mileage from mpg, make, and type” would be: lm(mileage ~ mpg + make + type...) Before attempting to answer these, or if you lose points upon an attempt, please review all CodeGrade information provided in the CodeGrade overview submodule - if you do not you are likely to lose points. What is the variance in total sleep for carni vores and those whose conservation status is lc? Your answer should be in a 1 X 1 data frame with a value…
Q2 Let L = {b, abb, bba}. Which of the following strings is not a member of L*? ΟΛ O bababb bbbaabb O bbbbababbabb
Using c++ Contact list: Binary Search A contact list is a place where you can store a specific contact with other associated information such as a phone number, email address, birthday, etc. Write a program that first takes as input an integer N that represents the number of word pairs in the list to follow. Word pairs consist of a name and a phone number (both strings). That list is followed by a name, and your program should output the phone number associated with that name. Define and call the following function. The return value of FindContact is the index of the contact with the provided contact name. If the name is not found, the function should return -1 This function should use binary search. Modify the algorithm to output the count of how many comparisons using == with the contactName were performed during the search, before it returns the index (or -1). int FindContact(ContactInfo contacts[], int size, string contactName) Ex: If the input is: 3 Frank 867-5309 Joe…
In the following program skeleton, replace the < insert code here> line with theappropriate code. The resulting program should display the initial list of songs,prompt the user for a string of text to be replaced and then prompt for new text toreplace it. After making the replacement, it should display the updated list of songs.import java.util.Scanner;public class UpdateSongs{public static void main ( String [] args){Scanner stdIn = new Scanner(System.in);String songs =“ 1. Welcome to Your Life – Grouplove\n” +“ 2. Sedona – Houndmouth\n” +“3. Imagine – John Lennon\n” +“4. Bohemian Rhapsody –Queen\n”;String oldText, newText;< insert code here>}}Sample Session:1. Welcome to Your Life – Grouplove”2. Sedona – Houndmouth3. Imagine – John Lennon4. Bohemian Rhapsody –QueenEnter text to replace: LennonEnter new text: Dean1. Welcome to Your Life – Grouplove”2. Sedona – Houndmouth3. Imagine – John Dean4. Bohemian Rhapsody –Queen
PYTHON Complete the function below, which takes two arguments: data: a list of tweets search_words: a list of search phrases The function should, for each tweet in data, check whether that tweet uses any of the words in the list search_words. If it does, we keep the tweet. If it does not, we ignore the tweet. data = ['ZOOM earnings for Q1 are up 5%', 'Subscriptions at ZOOM have risen to all-time highs, boosting sales', "Got a new Mazda, ZOOM ZOOM Y'ALL!", 'I hate getting up at 8am FOR A STUPID ZOOM MEETING', 'ZOOM execs hint at a decline in earnings following a capital expansion program'] Hint: Consider the example_function below. It takes a list of numbers in numbers and keeps only those that appear in search_numbers. def example_function(numbers, search_numbers): keep = [] for number in numbers: if number in search_numbers(): keep.append(number) return keep def search_words(data, search_words):
def findOccurrences(s, ch): lst = [] for i in range(0, len(s)): if a==s[i]: lst.append(i) return lst Use the code above instead of enumerate in the code posted below. n=int(input("Number of rounds of Hangman to be played:")) for i in range(0,n): word = input("welcome!") guesses = '' turns = int(input("Enter the number of failed attempts allowed:")) def hangman(word): secrete_word = "-" * len(word) print(" the secrete word " + secrete_word) user_input = input("Guess a letter: ") if user_input in word: occurences = findOccurrences(word, user_input) for index in occurences: secrete_word = secrete_word[:index] + user_input + secrete_word[index + 1:] print(secrete_word) else: user_input = input("Sorry that letter was not found, please try again: ") def findOccurrences(s, ch): return [i for i, letter in enumerate(s) if letter == ch] *** enumerate not discussed in…
Given the following code, write a for loop that will replace all potential instances of a, e, and u in the string tester with the letter Q string tester = "Dice Values"; cin >> tester;
how would i make a javascript function as follows myChoice( items ) This function accepts a list of items as input and creates a function that returns a randomly-chosen item. After choosing a random item, that same item will be always be returned, regardless of the functions input, with one exception. If the first input is the string 'rechoose', then a new random item will be chosen and therafter returned. Examples var a = myChoice( [1, "a", 3, false] ); a( 3, 12 ) => 3 // a random value. Your code may differ. a( 51, -2) => 3 a( "happy", false ) => 3 a( [1,2,3]) => 3 a( 'rechoose') => false // a random value. Your code may differ. a( a, a ) => false
TODO 3: Invoke the gaussian() function, which accepts x_values, mu, and sig. Save the results in the variable y_values. # TODO 3 y_values = display(y_values) todo_check([ (y_values.shape == (120,),'y_values does not have the correct shape of (120,)'), (np.all(np.isclose(y_values,…