Assignment 3(1)

python code. instructions are given within the code. 1) def invert_dict(d): """   Given a dictionary d, create the invert of the dictionary where   the key is a value v in d, and v is mapped to a set of keys in original   d whose values are equal to v.   Return the inverted dictionary mapping value to set of keys   """ return {1:1} 2) def histogram(words): """   Given a list of words, create a histogram dictionary where the key   is the length of a word and the value is the count of how many   words in the list are of that length.   Return the histogram dictionary mapping length to word counts   """ return {1:1} 3) def max_kv(d): """   Given a dictionary, return a tuple of key value pair where the key   is the largest in d.   """                                                                                       return (1, {1})

Displays a rank in the defined dictionary.a) Create a dictionary, rank = {1:"Freshman", 2:"Sophmore", 3:"Junior", 4:"Senior"}b) Request a user input for a number of years.c) Print the value of the matching key in the dictionary.d) Print the error message if input is invalid.   In actual code and psuedocode. Using python programming language.

Please answer with Python Question 1: write a program that keeps a dictionary in which both keys and values are strings, names of students and their courses grades. Prompt the user of the program to add or remove students, to modify grades, or to print all grades. The printout should be sorted by name and formatted like this:Carl: B+Joe: CSarah: AFrancine: A   Current Code: # Manage student grades. # Use a dictionary to track student grades.grades = {} # Loop until the user chooses to quit.choice = ""while choice != "Q" :choice = input("(A)dd, (R)emove, (M)odify, (P)rint all, or (Q)uit? ")choice = choice.upper()# write your code here

Create a dictionary in Python that contains the details of one customer in a bank. Display the complete dictionary. The perform the following operations on it: a)Randomly pop a value from the dictionary. b) Add a new key and value to the dictionary. c) Update the value of a key in the dictionary and delete one key from the dictionary. d)Print the length of the dictionary. e) Print the keys and values of the dictionary separately.

PYTHON!!!! Write a function that takes two dictionaries as arguments and merges them into a new dictionary and returns this new dictionary. If the same key exists in both dictionaries, then the larger value is stored as the value of the key in the new dictionary. You can assume that all values are comparable. """ def mergeDicts(dict1, dict2):

python code. define the run function. Instructions are given within the quotations. 1)def invert_dict(d): """ Given a dictionary d, create the invert of the dictionary where the key is a value v in d, and v is mapped to a set of keys in original d whose values are equal to v. Return the inverted dictionary mapping value to set of keys """ 2)def histogram(words): """ Given a list of words, create a histogram dictionary where the key is the length of a word and the value is the count of how many words in the list are of that length. Return the histogram dictionary mapping length to word counts """ 3)def max_kv(d): """ Given a dictionary, return a tuple of key value pair where the key is the largest in d. """ 4)def run(): """ Get words list from the file listed in argv[1]; create histogram of count of each word length; create invert dictionary that maps count to list of word length; use invert dictionary to find the list of word length with the most popular word count (use max_kv) """…

Dictionary & Tuple 1. Write a Python program to combine two dictionaries into one by adding values for common keys. Input contains two comma separated dictionaries. Print the new dictionary and create a tuple which contains unique values in sorted order. Sample Input а: 100, b: 100, с: 200, d: 300 а: 300, b: 200, d: 400, e: 200 Sample Output {'a': 400, 'b': 300, 'c': 200,'d': 700, 'e': 200} Values: (200, 300, 400, 700) 6. 2. Write a python program which prints the frequency of the numbers that were given as input by the user. Stop taking input when you find the string "STOP". Do not print the frequency of numbers that were not given as input. Use a dictionary to solve the problem Sample Input Sample Output 10 - 2 times 10 20 20 - 2 times 20 30 - 1 times 50 - 1 times 90 - 1 times 30 10 50 90 STOP

Please help me with my assignment I need to submit it today.   Create a Python dictionary that returns a list of values for each key. The key can be whatever type you want.  Design the dictionary so that it could be useful for something meaningful to you. Create at least three different items in it. Invent the dictionary yourself. Do not copy the design or items from some other source.  Next consider the invert_dict function from Section 11.5 of your textbook.  # From Section 11.5 of: # Downey, A. (2015). Think Python: How to think like a computer scientist. Needham, Massachusetts: Green Tree Press.  def invert_dict(d):     inverse = dict()     for key in d:          val = d[key]          if val not in inverse:               inverse[val] = [key]          else:               inverse[val].append(key)     return inverse  Modify this function so that it can invert your dictionary. In particular, the function will need to turn each of the list items into separate keys in the inverted…

answer the following questions: 1: A dictionary is an unordered collection of key-value pairs. True or False 2: What is printed by the following statements? mydict = {"cat":12, "dog":6, "elephant":23} print (mydict ["dog"]) 3: What is printed by the following statements? mydict = {"cat":12, "dog":6, "elephant":23} mydict ["mouse"] = mydict ["cat"] + mydict ["dog"] print (mydict ["mouse"]) 4: What is printed by the following statements? inventory = {'apples': 430, 'bananas': 312, 'oranges': 525, 'pears': 217} print (inventory.get("apples")) print (inventory.get("cherries")) (inventory.get("cherries", 0)) 5: What is printed by the following statements? inventory = {'apples': 430, 'bananas': 312, 'oranges': 525, 'pears': 217} for akey in inventory.keys (): print("Got key", akey, "which maps to value", inventory [akey]) ks list (inventory.keys ()) = print (ks) # the order in which we get the keys is not defined

1. Using python, create a program that uses a dictionary that performs contact tracing of persons. 2. The key is the person number and the values is a list of person numbers who are close contacts of this person. 3. The program inputs the person number and list of contacts for 3 persons. 4. Each person has 2 contacts. 5. This data is saved in a dictionary with the person numbers as keys, and the list of contacts as values. 6. The last input is the person number to query, and the program prints the list of close contacts. The program also prints the list of close contacts of those in close contact to the person queried. 7. The program prints 'No Contact' if there is no person record for a contact. 8. There is exactly 10 input integers and the input are all positive integers. 9. For this program, use python Dictionary get() Method. 10. Take a screenshot of your codes on your python complier and the expected output as well. SAMPLE INPUT 2 SAMPLE INPUT 1 # key person 1, person ID # close…

Python Write a function print_dict to print all the key-values in a dictionary, for example: >>> d2 {'a': 'one', 'b': 'two', 'c': 'Three'} >>> print_dict(d2) a:one b:two c:Three

python: answer in one line of code if possible, please def traditions_dict(adict):    """    Question 6    Given a dictionary that maps a person to a list of their favorite    GT traditions, return a dictionary with the value being    the list sorted by the last letter of each tradition. If two    traditions have the same last letter, sort by the first letter.     HINT: This will require the use of lambda functions     Args:        adict (dict)    Returns:        dict     >>> traditions_dict({"Jacob": ["The Horse", "Stealing the t", "Midnight Bud"],                   "Athena": ["Mini Five-Hundred", "Freshman Cake Race", "Buzzweiser Song"],                   "Liv": ["Freshman Cake Race", "George P. Burdell", "Buzzweiser Song"]})     {'Jacob': ['Midnight Bud', 'The Horse', 'Stealing the t'],    'Athena': ['Mini Five-Hundred', 'Freshman Cake Race', 'Buzzweiser Song'],    'Liv': ['Freshman Cake Race', 'Buzzweiser Song', 'George P. Burdell']}     >>>…

Estimated Completion Time: 2 minutes You are now working for Prof. Midas on a research project. You are given this piece of code to review which is intended to be a better and faster implementation of a function that checks whether a given key is in a dictionary (i.e., key lookup). You have to present your findings to Prof. Midas. Select all the findings which you will NOT present (i.e., select all answers which are FALSE). def key_in_dict(d, k): for item in d: if k == item: return True return False This code would always be slower than the builtin key lookup Python provides. O A key lookup in a dictionary in Python is generally faster than determining whether a value is in a list. O This code is way faster and will be included in the next version of Python (version 4.1). The code is incorrect from a functional perspective, the True and False should be switched. This code could be replaced with one line: return k in d O The code is correct and would always perform faster than the…

Date: 26th April 2021 Course: BIT1054 Fundamental of Computational Thinking: Python d) Write a Python program that stores information below in a dictionary. Then, update the age to 19 years old and add another entry named 'College' with value 'City University'. Print out the age and college. Name: Lee Chong Wei Age: 20 Course: Computer Science [5 marks] Answer:

2- Consider the following Python dictionary: {'Wednesday': 'Wednesday', 'Thursday': 'chilly'} Using the in keyword, would 'Wednesday' be considered a member of this dictionary? Ensure that you select the answer which also includes a correct explanation. a. No, because it is not a value in the dictionary. b. Yes, because it is a value in the dictionary. c. No, because it is not a key in the dictionary. d. No, because it is not both a key and a value in the dictionary (not just one or the other). e. Yes, because it is a key in the dictionary. f. Yes, because it is both a key and a value in the dictionary (not just one or the other).

Part 2 • Create a dictionary with at least five key-value pairs. Use strings for either the keys, the values, or both. • On a single line, display your dictionary's keys and values, with a comma between each pair. • Modify one of the values in your dictionary. o On a single line, display your dictionary's keys and values, with a comma between each pair. • Delete one of the key-value pairs from your dictionary. o On a single line, display your dictionary's keys and values, with a comma between each pair. Print a blank line. • Display your dictionary's keys, one per line. • Print a blank line. • Display your dictionary's values, one per line. Do not print curly braces, quotation marks, or colons. Do not hard code anything in your print statements! Do not use my key-value pairs. Choose your own! For extra credit, do not print the trailing (final) comma on each of the first three lines of output. Sample output: Buffalo Sabres, Toronto Maple Leafs, Boston Bruins, Ottawa Senators, Montreal…

1. Write a Python function called add_daily_temp that is given a (possibly empty) dictionary meant to hold the average daily temperature for each day of the week, a temperature value, and the day of the week for the recorded temperature. The function should then add the temperature to the dictionary only if it does not already contain a temperature for that day. The function should return the resulting dictionary, whether it is updated or not.

In python: Problem Statement:The program takes a string and creates a dictionary with key as first character and value as thecount of letter in the string and also, sort the dictionary w.r.t the values of count in descendingorder. Pseudocode:Start of build_dict function   An empty dictionary is declared   Start of for loop to traverse through the letters of the string       If letter is not present as a key in the dictionary           The letter is initialized as the key and assign 1 to it ( since initially the count would be 1)       Else         The value of the letter as key in the dictionary is increased by 1 End of build_dict function Sort the dictionary and assign it back to the same dictionary variableStart of print_dict function    Iterate over all the items of the dictionary        Print the key and valueEnd of print_dict function Start of main function    User must enter a large string and store it in a variable    Call the build_dict function with string parameter and return…

1. Write a Python function called add_daily_temp that is given a (possiblyempty) dictionary meant to hold the average daily temperature for each day ofthe week, a temperature value, and the day of the week for the recordedtemperature. The function should then add the temperature to the dictionaryonly if it does not already contain a temperature for that day. The functionshould return the resulting dictionary, whether it is updated or not.

In python which of the following is true about dictionaries? A. A dictionary can contain multiple items with the same key. B. A key has to be mutable. C. Values don’t have to be unique. D. A key doesn’t have to be unique. Which one?

1. Create a dictionary using java

Topic: Database On my bookshelf of paper books, I have a dictionary that consists of multiple volumes, each of which is a book.  One covers A-E, another F-J, another K-M, and so on. To find a word, I look at the alphabetic ranges to find the right volume. Then I use the ranges at the top of each page to turn to the proper page.  Then I find the word  on the page.  Pick the correct answer.                             A. Multi-level Indexes                             B. Secondary indexes                             C. None the above

python: def traditions_dict(adict):    """    Question 6    Given a dictionary that maps a person to a list of their favorite traditions, return a dictionary with the value being    the list sorted by the last letter of each tradition. If two    traditions have the same last letter, sort by the first letter.     HINT: This will require the use of lambda functions     Args:        adict (dict)    Returns:        dict     >>> traditions_dict({"Jacob": ["The Horse", "Stealing the t", "Midnight Bud"],                   "Athena": ["Mini Five-Hundred", "Freshman Cake Race", "Buzzweiser Song"],                   "Liv": ["Freshman Cake Race", "George P. Burdell", "Buzzweiser Song"]})     {'Jacob': ['Midnight Bud', 'The Horse', 'Stealing the t'],    'Athena': ['Mini Five-Hundred', 'Freshman Cake Race', 'Buzzweiser Song'],    'Liv': ['Freshman Cake Race', 'Buzzweiser Song', 'George P. Burdell']}     >>> traditions_dict({"Madison": ["The Horse", "Midnight Bud", "Buzzweiser…

QUESTION 10 List is a collection of elements with the same type that can be accessed by index. The size of list can increase dynamically O True O False QUESTION 11 In C#, Dictionary is used to store a collection of key-value pairs. Keys can be null or duplicated. Values must be unique and cannot be null. O True O False QUESTION 12 https://wtclass.wtamu.edu/webapps/assessment/take/launch.jsp?course_assessment_id=_183007_1&course_id=_55233_1&content_id=_2535180_1&step=null QUESTION 13 No matter how many objects of the class are created, there is only one copy of the static member belonging to the class. O True O False 4 Q Search static elements can be accessed directly using the class name without an object. O True O False W 67%

Hashing Project in Python to Extract Features of Names   You are given the following three functions. They take plain text names and covert then into features vefctors so that you can work with them in a classification system.   Let's check your understanding of Python function. Add notes to each line describing what is happening in these functions.     FUNCTION ONE:   def hashfeatures(baby, B, FIX):   """   Input:     baby : a string representing the baby's name to be hashed     B: the number of dimensions to be in the feature vector     FIX: the number of chunks to extract and hash from each string       Output:     v: a feature vector representing the input string   """   v = np.zeros(B)   for m in range(FIX):     featurestring = "prefix" + baby[:m]     v[hash(featurestring) % B] = 1     featurestring = "suffix" + baby[-1*m:]     v[hash(featurestring) % B] = 1   return v     FUNCTION TWO:   def name2features(filename, B=128, FIX=3, LoadFile=True):   """   Output:     X : n feature…

Write a function, young_john(people), that returns True if the dictionary people contains the key "John" with a value of 19. It should return False otherwise.   like this   def young_john(people):

gpacalc.py by using 'sys.argv"   ● Use the following dictionary to complete this assignment: {'A':4.0, 'A-':3.66, 'B+':3.33, 'B':3.0, 'B-':2.66, 'C+':2.33, 'C':2.0, 'C-':1.66, 'D+':1.33, 'D':1.00, 'D-':.66, 'F':0.00} ● Create a program, gpacalc.py, that takes four letter grade arguments and prints out the corresponding GPA, to two decimals. Your program should work both in arguments are upper-case and lower-case. The values should be to two decimal places. Your program should print in the form: “My GPA is x” Where x is equal to the GPA calculation

In python without using pandas, .head, .iloc, or .select create a function that returns a dictionary of only the columns specified from a data set example car = {suv, sedan, coupe} speed = {10, 20, 30] color = {green, white, black} if given the parameter of "color" should return a table with all values in color dictionary

185e def find(self, key): 186e 187 188 Efficiency: 189 Finds and returns a copy of value in the set that matches key. Use: value = source.find(key) 190 191 192 193 Parameters: 194 key - a partial data element (?) 195 Returns: 196 value - a copy of the full value matching key, otherwise None (?) 197 198 199 200 # your code here 201

Implement the function common_players. The common_players function takes in a roster dictionary and identifies which keys share the same values. The function returns a new dictionary of this structure: Keys: The values from the roster dictionary Values: A list of keys from roster that share that same value. def common_players (roster): """Returns a dictionary containing values along with a corresponding list of keys that had that value from the original dictionary. >>> full_roster = {"bob": "Team A", "barnum": "Team B", "beatrice": "Team C", "bernice": "Team B", "b >>> player_dict = common_players (full_roster) >>> dict(sorted (player_dict.items())) {'Team A': ['bob', 'belle', 'baxter'], 'Team B': ['barnum', 'bernice', 'bill', 'bernie'], 'Team C': [ |||||| "*** YOUR CODE HERE ***" S O

Consider the following Python dictionary variable definition: occupations = {'steve': 'plumber', 'mason': 'mason'} Using the in keyword, would 'mason' be considered a member of occupations? Ensure that you select the answer which also includes a correct explanation. a. Yes, because it is a value in the dictionary. b. No, because it is not a value in the dictionary. c. Maybe, it depends on how the code is commented. d. Yes, because it is a key in the dictionary. e. No, because it is not a key in the dictionary.

1. Write a Python program to print every key-value pair of a dictionary line by line. 2. Write a Python program to merge two Python dictionaries.

def invert_dict(d): """ Given a dictionary d, create the invert of the dictionary where the key is a value v in d, and v is mapped to a set of keys in original d whose values are equal to v. Return the inverted dictionary mapping value to set of keys """

def histogram(words): """ Given a list of words, create a histogram dictionary where the key is the length of a word and the value is the count of how many words in the list are of that length. Return the histogram dictionary mapping length to word counts """

Python The program will create a quiz that will ask for the capital of a random state. Your program will repeat so that a total of 5 random states are presented to the user Write a program that creates a dictionary containing the U.S. states as keys, and their capitals asvalues. (Use the Internet to get a list of the states and their capitals.) The program should then randomly quiz the user by displaying the name of a state and asking the user to enter that state’s capital. The program should keep a count of the number of correct and incorrect responses. (As an alternative to the U.S. states, the program can use the names of countries and their capitals.)