In this coding challenge, you will be retrieving email usernames from a string. You will write a function named get_usernames () that takes in a string as it's input parameter, and returns a list of email usernames in the string. The input strings will contain 0 or more emails in the format username@domainname, and the '@' symbol will only appear in the context of an email. The order of usernames should match the order in the input text. For example: EXAMPLE 1 text: "If you need help on an assignment, email help@ucsd.edu or support@gmail.com" return: ['help', 'support'] EXAMPLE 2 text: "Good morning! I hope you're having a great time with CSE 8A!" return: [] EXAMPLE 3 text: "I've been having a lot of trouble reaching you, can you please email me at cse@ucsd.edu? return: ['cse', 'cse'] Here is the problem description: Function Name: get_usernames Parameter: text - A string corresponding to a piece of text containing 0 or more emails. Return: A list of the email usernames in the input text. Description: Given a piece of text, extract all email usernames and return them in a list.

In this coding challenge, you will be retrieving email usernames from a string. You will write a function named get_usernames () that takes in a string as it's input parameter, and returns a list of email usernames in the string. The input strings will contain 0 or more emails in the format username@domainname, and the '@' symbol will only appear in the context of an email. The order of usernames should match the order in the input text. For example: EXAMPLE 1 text: "If you need help on an assignment, email help@ucsd.edu or support@gmail.com" return: ['help', 'support'] EXAMPLE 2 text: "Good morning! I hope you're having a great time with CSE 8A!" return: [] EXAMPLE 3 text: "I've been having a lot of trouble reaching you, can you please email me at cse@ucsd.edu? return: ['cse', 'cse'] Here is the problem description: Function Name: get_usernames Parameter: text - A string corresponding to a piece of text containing 0 or more emails. Return: A list of the email usernames in the input text. Description: Given a piece of text, extract all email usernames and return them in a list.

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

See similar textbooks

Similar questions

A word Decrambling game using srand() for descrambling these words: "Screen, Programming, Command, Definition." The game should be timed for 1 minute or 30 seconds using the <ctime> library. Should allow for user input to be able to guess...
1c) Average sentence length We will create a function ( avg_sentence_len ) to calculate the average sentence length across a piece of text. This function should take text as an input parameter. Within this function: 1. sentences : Use the split() string method to split the input text at every '.'. This will split the text into a list of sentences. Store this in the variable sentences . To keep things simple, we will consider every "." as a sentence separator. (This decision could lead to misleading answers. For example, "Hello Dr. Jacob." is actually a single sentence, but our function will consider this 2 separate sentences). 2. words : Use the split() method to split the input text into a list of separate words, storing this in words . Again, to limit complexity, we will assume that all words are separated by a single space (" "). (So, while "I am going.to see you later" actually has 7 words, since there is no space after the ".", so we will assume the this to contain 6 separate…
What function do you use to copy a string to another string variable name? strcat() atof() atoi() strcpy()
3. Which among the following shows a valid use of the Direction enumeration as a parameter to the moveCharacter function? Select al that apply. enum Direction { case north, south, west, east}func moveCharacter(x: Int, y: Int, facing: Direction) {// code here} moveCharacter(x: 0, y: 0, facing: .southwest) moveCharacter(x: 0, y: 0, facing: Direction.north) moveCharacter(x: 0, y: 0, facing: .south) moveCharacter(x: 0, y: 0, facing: Direction.northeast)
In the student sample program files for this chapter, you will find a text file namedGasPrices.txt. The file contains the weekly average prices for a gallon of gas in the UnitedStates, beginning on April 5th, 1993, and ending on August 26th, 2013. Figure 8-7 shows anexample of the first few lines of the file’s contents:Figure 8-7 The GasPrices.txt fileDescriptionEach line in the file contains the average price for a gallon of gas on a specific date. Each line isformatted in the following way:MM-DD-YYYY:PriceMM is the two-digit month, DD is the two-digit day, and YYYY is the four-digit year. Price is theaverage price per gallon of gas on the specified date.For this assignment, you are to write one or more programs that read the contents of the file andperform the following calculations:Average Price Per Year: Calculate the average price of gas per year, for each year in thefile. (The file’s data starts in April of 1993, and it ends in August 2013. Use the data that ispresent for the…
Write a code in python for this exercise below
In C language
In c++ language