Which of the following statements is false? O a. You can create a dictionary by enclosing in curly braces, {}, a comma-separated list of key-value pairs, each of the form key: value. O b. You can create an empty dictionary with {}. O . The following code creates a dictionary with the country-name keys 'Finland', 'South Africa' and 'Nepal' and their corresponding Intemet country code values 'fi', 'za' and 'np': country_codes = {'Finland', 'fi', 'South Africa', 'za', *Nepal', 'np'} O d. When you output a dictionary, its comma-separated list of key-value pairs is always enclosed in curly braces.

Which of the following statements is false? O a. You can create a dictionary by enclosing in curly braces, {}, a comma-separated list of key-value pairs, each of the form key: value. O b. You can create an empty dictionary with {}. O . The following code creates a dictionary with the country-name keys 'Finland', 'South Africa' and 'Nepal' and their corresponding Intemet country code values 'fi', 'za' and 'np': country_codes = {'Finland', 'fi', 'South Africa', 'za', *Nepal', 'np'} O d. When you output a dictionary, its comma-separated list of key-value pairs is always enclosed in curly braces.

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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1. Write a function invert_dict to reverse a dictionary, for example: >>> eng2sp = {'one': 'uno', 'two': 'dos', 'three': 'tres'} >>> sp2eng = invert_dict(eng2sp) >>> sp2eng {'uno':'one', 'dos':'two', 'tres':'three'} 2. 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
given dictionaries, d1 and d2, create a new dictionary with the following property. For each entry(a,b) in d1, if a is not a key of d2 then add (a,b) to the new dictionary. For each entry (a,b) in d2, if a is not a key of d1 then add (a,b) to the new dictionary. For example, if d1 is {2:3, 8:19, 6:4, 5:12} and d2 is {2:5, 4:3, 3:9}, then the new dictionary should be {8:19, 6,4, 5:12, 4:3, 3:9}. using puthon
Rewrite the following arguments formally and state which are valid/invalid.Dictionary Use names for individuals (Mac and Ashley ) and the following predicatesLovesFC(a) = “a loves fish and chips”; LikesTS(a) = “a likes tomato sauce”;Loud(a) = “a is a loud flier”; LikesCold(a) = “a likes the cold”;CITui(a) = “a is a Chatham island Tui”Bird(a) = “a is a bird”; Kakapo(a) = “a is a Kakapo” (a)All lovers of fish and chips like tomato sauce.Ashley loves fish and chips.Ashley likes tomato sauce. (b)No loud fliers like the cold.All Chatham island Tui are loud fliers.No Chatham island Tui like the cold.(c)All kakapo are birds.Mac is a bird.Mac is a kakapo.
Dear Expert, the solution posted here or the one I recieved erlier doesn't work. I spent much time to figure it out with other resources, but couldn't get it. I will appreciate if you can carefully revise and reach me with th solution. Thanks. Here is the question: 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 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
To create a dictionary, you just surround a sequence of value pairs of separated by: and the pair separated by commas, within curly braces. True or false?
???????? 1:You are given a list of courses that are currently available in BRACU that looks like the following: courses = ['CSE110','CSE111','MAT620','CSE520','EEE361','CSE650','MAT510']. All courses till 400 level (499) are for the undergraduate students whereas any courses above 500 are for the graduate or masters students. Write a python program that creates a dictionary from the above list where the keys will be each department name (CSE,EEE,MAT for the above example) and their values will be a dictionary of two keys -Undergraduate Courses and Graduate Courses. Each key will have courses that fall in Undergraduate and Graduate level respectively. Sample Input - No need to take input ['CSE110','CSE111','MAT620','CSE520','EEE361','CSE650','MAT510'] Sample Output: (You just have to print the resultant dictionary. No need to follow the pattern below)…
Assume, you have been given a dictionary where the keys present the name of the father and the value is a list of names of the sons of that person. For example A has 3 sons namely X, Y, and Z. Again X has three sons namely E, F, and G. So, A is the grandfather of E, F, and G. family = {"A" : ["X", "Y", "Z"], "B": ["M", "N"], "W" : ["A", "B"], "X" : ["E", "F", "G"]} You need to write a code which takes an input and prints the names of all his grandsons in the format shown in output samples. If he does not have any grandchildren just print “Get your sons married first! Wanna_be_grandpa!!” You can assume the input will always be a key from the dictionary. But we will check your code with a different dictionary. So do not write a code for this particular dictionary only. Enter Assume, you have been given a dictionary where the keys present the name of the father and…
Regarding a dictionary, which of the following is not true? This is for python. A dictionary can contain another dictionary. A dictionary contains key-value pairs, typically separated by a colon. A dictionary can be modified. The contents of a dictionary can be accessed by using either its keys or by using indexing.
Suppose at some point in your code, you make a dictionary called dic1 dic1 = {'a': 1} This dic1 dictionary will be modified later in the code. To keep track of the original version of dic1, you make another key in the same dictionary using the following assignment statement: dic1['original'] = {'a': 1} Later in the code you modify dic1 as follows: dic1['b'] = 2 A colleague points out that this is equivalent to the following code: dic2 = {'a': 1} dic2['original'] = dic2 dic2['b'] = 2 Question 1 If you followed your colleague's suggestion and made dic2 as above, will dic2['original'] keep track of the original dictionary {'a': 1}? Explain.
I need help with this assignment, I use C++. Can you also please show the console for the program? Thank you. Write a program to do the following: Use the same input seed data you used for Lab 4 (your BST homework) as seed input data into a hash table. Declare a hash table of size 29 elements. To hash your currency objects into the hash table, use the pseudorandom hash scheme - (m*w + n*f) % size - where size = 29, m = 2, n = 3, w = whole value, f = fractional value. For collision resolution, use quadratic probing in the same direction always. Remember to circle around to the start of the array if needed. Your main will first load the data file into the hash table and print the number of data items loaded, load factor and number of collisions. Then it will ask the user in a loop to enter a Dollar to search for. If the Dollar object is found in the hash table, it will print the index where found, otherwise it will print 'Invalid Data'. Then it will ask the user if they want to check…
Use the function given below to, first, help you to convert a multiline CFG string representation of the form expected into a dictionary represention. Then write the function being asked. def cfg_str_to_dict(cfg_str): """Converts a multiline CFG string representation of the form required into a dictionary represention, e.g. "S=ab|bA|BB|_" becomes {"S": ["ab", "bA", "BB", ""]} """ nonterminals = {char for char in cfg_str if char.isupper()}.union({'S'}) result = {nt: [] for nt in nonterminals} productions = cfg_str.splitlines() for production in productions: nt, rhs = production.split("=") rhs = rhs.replace("_", "") # Use "" for epsilon rhs_list = rhs.split("|") result[nt] = result.get(nt) + rhs_list return result
I need help with this assignment, I use C++. Write a program to do the following: Use the same input seed data you used for Lab 4 (your BST homework) as seed input data into a hash table. Declare a hash table of size 29 elements. To hash your currency objects into the hash table, use the pseudorandom hash scheme - (m*w + n*f) % size - where size = 29, m = 2, n = 3, w = whole value, f = fractional value. For collision resolution, use quadratic probing in the same direction always. Remember to circle around to the start of the array if needed. Your main will first load the data file into the hash table and print the number of data items loaded, load factor and number of collisions. Then it will ask the user in a loop to enter a Dollar to search for. If the Dollar object is found in the hash table, it will print the index where found, otherwise it will print 'Invalid Data'. Then it will ask the user if they want to check again or end the program. To submit, upload your code files and…