Computer Science
Given the dictionary x = {'k1':'v1', 'k2':'v2', 'k3':'v3'}, create a dictionary with the opposite mapping, i.e., write a program to create the dictionary as :
inverted_x = {'v1': 'k1' , 'v2' :'k2' , 'v3':'k3'}
Python
Python Dictionaries
17 Likes
Answer
x = { "k1" : "v1" , "k2" : "v2", "k3" : "v3"}
inverted_x = {}
for i in x :
inverted_x[x[i]] = i
print(inverted_x)Output
{'v1': 'k1', 'v2': 'k2', 'v3': 'k3'}
Answered By
9 Likes
Related Questions
Create a dictionary whose keys are month names and whose values are the number of days in the corresponding months.
(a) Ask the user to enter a month name and use the dictionary to tell how many days are in the month.
(b) Print out all of the keys in alphabetical order.
(c) Print out all of the months with 31 days.
(d) Print out the (key-value) pairs sorted by the number of days in each month.
Can you store the details of 10 students in a dictionary at the same time ? Details include - rollno, name, marks, grade etc. Give example to support your answer.
Given two dictionaries say D1 and D2. Write a program that lists the overlapping keys of the two dictionaries, i.e., if a key of D1 is also a key of D2, then list it.
Write a program that checks if two same values in a dictionary have different keys. That is, for dictionary D1 = { 'a' : 10, 'b': 20, 'c' : 10}, the program should print 2 keys have same values and for dictionary D2 = {'a' : 10, 'b' : 20, 'c' : 30} , the program should print No keys have same values.