Which of the following statements correctly define Python dictionaries? Choose all that applies.
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Which of the following statements correctly define Python dictionaries? Choose all that applies.
- Dictionaries are mutable.
- A lookup operation means finding the key of some value v.
- There can be two or more entries with the same keys in a dictionary.
- The len function works with dictionaries.
- Items can be accessed by position in a dictionary.
- Items are accessed by key.
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- python exercise: Write a Python function called get_top_students that takes the list of dictionaries as input and returns a dictionary containing the name and GPA of the top two students in the list. Each dictionary has the following keys: "name", "age", "major", and "gpa".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_heights([{"name": "todd","height":170},{"name": "sarah","height":165},{"name": "dweezil", "height":175}], %3D ["sarah", "elíza", "dweezil"]) [165, None, 175]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_heights([{"name": "todd","height":170},{"name": "sarah","height":165},{"name": "dweezil", "height":175}], ["sarah", "elíza", "dweezil"]) [165, None, 175]
- 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:ThreeThere are 5 big names of a certain field: Tom, Jerry, Snoopy, Pooh and Luffy, whose ID are 88888, 5555555, 11111, 12341234 and 1212121, respectively. Please organize those data in dictionary. Program to achieve the following function: After a user inputs the name of a big name, it outputs his/her ID. Separate the results for two blanks with a semicolon. 1- def find person(dict_users, stru): (stru): 1f dict users. return dict_users[stru] else: return 'Not Found' 3 6 name _nain_": dict_users = {'Tom' : 88888, "Jerry':5555555, 'Snoopy':11111, 'Pooh":12341234 Luffy':12i2121) stru = Input ('Please input the name: ') orintiltind person( dict users. 7- if Input/Output : 1 >>> Please input the name: Jerry 5555555 >>>Dictionary Swap Write a function called dictionary_swap that takes a dictionary as a parameter. It does not modify the original dictionary, but it creates and returns a new one. Keys from the original dictionary become values in the new one, and values become keys. For example, given the inputs below, your program should return the corresponding values. Input to the Function Returns {'one':1, 'two': 2, 'three':3} {1:'one', 2:'two', 3:'three'} {-1:-10, -2:-20, -3:-30} {-10:-1, -20:-2, -30:-3} {} {}
- 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…Complete the following statements about a Python dictionary. Strings be used as keys of a Python dictionary. Floats be used as keys of a Python dictionary. be used as keys of a Python dictionary. Lists Dictionaries can cannot be used as keys of a Python dictionary.Problem Statement: The program takes a string and creates a dictionary with key as first character and value as the count of letter in the string and also, sort the dictionary w.r.t the values of count in descending order or sort it based on the key in alphabetical order. 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 variable Start of print_dict function Iterate over all the items of the dictionary Print the key and value End 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 the…
- Capital QuizWrite a program that creates a dictionary containing the U.S. states as keys, and their capitals as values. (Use the Internet to get a list of the states and their capitals.) The programshould then randomly quiz the user by displaying the name of a state and asking the userto enter that state’s capital. The program should keep a count of the number of correct andincorrect responses. (As an alternative to the U.S. states, the program can use the names ofcountries and their capitals.) in phytonHomework Assignment-1Topics: Functions, Dictionary, ImportProblem description: Write a python application to simulate an online clothing system. Thepurpose of this assignment is to gain experience in Python dictionary structure, create basicPython functions and import a module.Design solution: The template file contains a list of clothes item sold, each item in the listcontains the item id, name of the item and the prices. The program will generate an items_dictwhere each key is the item id of the cloth and the values will be a list of item name and priceinformation. A customer will be presented with a main menu with 4 different options: displayall items, add an item to cart, checkout and exit the program. A customer can buy an item byentering the ID of the item. This program implements a dictionary called cart, where each key isthe item id and the values are the list of name, price and quantity that user chooses topurchase. The program keeps repeating by displaying the main menu to…Problem The program takes a dictionary and checks if a giver. key exists in a dictionary or not.