5. select_lines_from_file In this function, we will open a file for reading, look at each line in the file, and return a list of the lines in the file that contain a specified query string. We do not need to change the lines in the file in any way, just put them in a list and return that list. Don't worry about case -- this function is case-insensitive. If we have the following text in a file called final_sample.txt: it was the best of times it was the worst of times time keeps on slippin into the future this sentence does not contain that particular word also this one doesn't contain it either Then a sample call should look like; >>> select_lines from file("final_ sample.txt", "time"). ['it was the best of times\n', 'it was the worst of times\n', 'time keeps on slippin into the future\n']

5. select_lines_from_file In this function, we will open a file for reading, look at each line in the file, and return a list of the lines in the file that contain a specified query string. We do not need to change the lines in the file in any way, just put them in a list and return that list. Don't worry about case -- this function is case-insensitive. If we have the following text in a file called final_sample.txt: it was the best of times it was the worst of times time keeps on slippin into the future this sentence does not contain that particular word also this one doesn't contain it either Then a sample call should look like; >>> select_lines from file("final_ sample.txt", "time"). ['it was the best of times\n', 'it was the worst of times\n', 'time keeps on slippin into the future\n']

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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3. lookup_friends_heights This function takes a friends database (a list of dictionaries, like the previous functions) and a list of friends names, and it returns a list of heights for the specified friends. If a given friend's name is not present in the friends database, we put a None in the corresponding slot. We assume that there will be at most one friend with a given name in the list. You may want to use nested for-loops for this function. Sample calls should look like this. >>» lookup_friends_heights([{"name":"todd", "height":170},{"name":"sarah","height":165}, {"name":"dweezil","height":175}], ["dweezil", "sarah"]) [175, 165] >>> lookup_friends_heightsC[{"name":"todd","height":170},{"name":"sarah","height":165}, {"name":"dweezil","height":175}], ["sarah", "eliza", "dweezil"]) [165, None, 175] 4. class definition for Friend For the next version of the friends database (coming soon!), we want to use classes rather than dictionaries. Define a Friend class , where each Friend object…
Given a variable that contains mixed collection types, update the provided function to display the first inital and last name of the instructor: Update the function to accept a list and the name of the instructor you wish to find. Update the function to reformat the name of the instructor and return it back to the calling program. If the instructors name is entered as John Smith then the function should return back J. Smith If the instructors name is entered as Tracy Anne Rios then the function should return back T. Rios If the instructors name is entered as Jackson then the function should return back Jackson Add in any exception handling for the following scenarios: Exceptions related to accessing the list or dictionary should output the message: Instructor not found. All other exceptions should output the message: An error has occurred. You may only use a try/except block, no if statements Figure out how to use only one return in the method sample output Input Amy Williams…
Given a variable that contains mixed collection types, update the provided function to display the first inital and last name of the instructor: Update the function to accept a list and the name of the instructor you wish to find. Update the function to reformat the name of the instructor and return it back to the calling program. If the instructors name is entered as John Smith then the function should return back J. Smith If the instructors name is entered as Tracy Anne Rios then the function should return back T. Rios If the instructors name is entered as Jackson then the function should return back Jackson Add in any exception handling for the following scenarios: Exceptions related to accessing the list or dictionary should output the message: Instructor not found. All other exceptions should output the message: An error has occurred. You may only use a try/except block, no if statements Figure out how to use only one return in the method Sample output: Input Amy Williams…
Given a variable that contains mixed collection types, update the provided function to display the first inital and last name of the instructor: Update the function to accept a list and the name of the instructor you wish to find. Update the function to reformat the name of the instructor and return it back to the calling program. If the instructors name is entered as John Smith then the function should return back J. Smith If the instructors name is entered as Tracy Anne Rios then the function should return back T. Rios If the instructors name is entered as Jackson then the function should return back Jackson Add in any exception handling for the following scenarios: Exceptions related to accessing the list or dictionary should output the message: Instructor not found. All other exceptions should output the message: An error has occurred. Test to ensure the program passes the provided test cases found in the TESTS.md file You may only use a try/except block, no if statements…
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):
You are given the pointer to the head node of a linked list and an integer to add to the list. Create a new node with the given integer. Insert this node at the tail of the linked list and return the head node of the linked list formed after inserting this new node. The given head pointer may be null, meaning that the initial list is empty. Function Description Complete the insertNodeAtTail function in the editor below. insertNodeAtTail has the following parameters: SinglyLinkedListNode pointer head: a reference to the head of a list int data: the data value for the node to insert Returns SinglyLinkedListNode pointer: reference to the head of the modified linked list Input Format The first line contains an integer , the number of elements in the linked list.The next lines contain an integer each, the value that needs to be inserted at tail. Constraints Sample Input STDIN Function ----- -------- 5 size of linked list n = 5 141 linked list data values…
The function last_words in python takes one parameter, fname, the name of a text file, and returns a list containing the last word from each line of the file. For example, if the file contents are: apples are red bananas are yellow limes are green then the list ["red", "yellow", "green"] should be returned. NOTE: You may assume the file will contain no blank lines. BIG HINT: If line is a string representing a line of text (inside a for loop!), then L = line.split() creates a list of the words in the line. For example: Test Result L = last_words("wordlist1.txt") print(L) ['happy', 'sad', 'angsty', 'euphoric', 'maudlin']
At the end of this and other textbooks, there usually is an index that lists the pages where a certain word appears. In this problem, you will create an index for a text but, instead of page number, you will use the line numbers. You will implement function index() that takes as input the name of a text file and a list of words. For every word in the list, your function will find the lines in the text file where the word occurs and print the corresponding line numbers (where the numbering starts at 1). You should open and read the file only once Create the python function as part of a python program. The data required for the function should be created in the python program and passed to the function. its an exercise pyrthon problem 6.27
PLEASE ASSIST ON THE BELOW REVIEW Before the user can read an email, they have to see the emails. To achieve this, your program should first of all determine which emails have not been read and return that to the user. Then the user can choose. The emails should be numbered so that the user can provide the number as the index. Consider using the enumerate function to achieve this. I realise that there are no emails within the email box , kindly add some dummy emails in this list so that at least there is something within the inbox list.Do the same for marks as spam. Present to the user all the emails that have not been marked as spam for the user to mark as spam.Most importantly, your code is not well indented. Try to work on your indentation as it makes your code easier to read and the logic easier to follow. Indentation is key in python to define the blocks of statements. The number of spaces must be uniform in a block of code. It is preferred to use four whitespaces instead of tabs…
Complete the analyze_text() function that takes a single string parameter - text. You can assume that the parameter string will have a length of at least 1. The function returns a list with 2 items, both of them tuples. The first tuple contains the unique vowels found in the parameter text, sorted in alphabetical order. The second tuple contains the unique consonants found in the parameter text, sorted in alphabetical order. In English, vowels are the letters "A", "E", "I", "O", and "U". Consonants are letters that are not vowels. Note that uppercase and lowercase letters should count as the same letter - an "A" and an "a" would both count as an "a". Some examples of the function being called are shown below. For example: Test text = "Hello world!" print("Text analysis:", analyze_text (text)) text = "Hello world!" text_analysis = analyze_text (text) print (type (text_analysis)) print (type (text_analysis[0])) print (type (text_analysis[1])) text = "I think, therefore I am." print("Text…
Complete the check_game_finished (coins_list) function. The function takes the coins list as a parameter and returns True if the game is finished and False otherwise. The game is finished when the 4 "$" symbols are in the first 4 positions of the coins list. For example: Test Result print(check_game_finished (['-', '$', '-', '$', '-', '$', '-', '-', '$'])) False print(check_game_finished (['$', '$', '$', '$', '-', '-', '-', '-', '-'])) True Answer: (penalty regime: 0 %) Reset answer 1 |def check_game_finished (coins_list):
Questions P17 and P18 are related to the code skeleton of the function below. The function readPeople() below takes a string fname as an argument, which is the name of a file containing information about people on each line. The function returns a dictionary containing all of the information contained in the file. Each line of the file contains three items of information about a person: ID number, name, and age. The information stored in each dictionary entry should be the name and age of a person, and it should be associated with a key which is the ID number of that person. def readPeople(fname): infile = open(fname, "r") pDict = {} _______[P17]_______ ldat = l.split() _______[P18]_______ return(pDict) An example file is shown below.example.txt1234 Joe 242345 Jane 353456 Pete 22Assume that the ID numbers are unique for each person. Assume that the names contain only alpha-numeric characters and do not contain spaces. The value of [P17] Group of answer…