Assignment 3(1)

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).

True/False 9. A Python dictionary is a kind of sequence.

need help with python code. can you please keep it simple, I mean can you not use high-level python codes to answer this.

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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…

Python

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 the ques in python with showing the code

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.

1. Create a python dictionary dict that maps each (lower case) character of the basic Latin alphabet to another. Make sure no one letter is mapped to itself. Do not use a simple ordering, such as reversing the alphabet. This will act as your cipher.

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) """…

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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

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

Function in python thst inverts the key and value in a dictionary If dictionary encounters more than one of the same key when trying to invert dictionary. Raise a key error

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

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):

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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

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…

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12 Language Python

Describe the time complexity of common dictionary operations in Python, such as inserting, deleting, and searching for a key-value pair.

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:

Python

Question 4  Full explain this question and text typing work only

Use python, import sys, 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.  Your program should print in the form:   My GPA is x   Where x is equal to the GPA calculation

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…

solution in python language

Python

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?