Question

Implement the function flip_dict which takes in a dictionary and returns a similar dictionary where the values have become the keys and the keys have become the values.

In this problem, you can assume that each key value pair is unique, and no key or value will be repeated or used more than once.

def flip_dict(dictionary):

"""Returns a flipped version of the original dictionary.

>>> TAs = {"12pm-2pm": "brian", "10am-12pm": "sophia", "2pm-4pm": "alec"}

>>> flipped_TAs = flip_dict(TAs)

>>> sorted_keys = sorted(flipped_TAs)

>>> sorted_keys ['alec', 'brian', 'sophia']

>>> [flipped_TAs[i] for i in sorted_keys] ['2pm-4pm', '12pm-2pm', '10am-12pm'] """

"*** YOUR CODE HERE ***"

Answer 1

The python code to invert dictionary can be written as:

You can copy the code from below text and use the indentation as shown above.

def flip_dict(dictionary):
# initialize result as empty dictionary
result = {}
# consider each key from input dictioanry
for key in dictionary:
# get value of key
val = dictionary[key]
# add inverted key value pairs to result
result[val] = key
# return inverted dictionary
return result
# test the function
TAs = {"12pm-2pm": "brian", "10am-12pm": "sophia", "2pm-4pm": "alec"}
flipped_TAs = flip_dict(TAs)
# display flipped dictionary
print(flipped_TAs)

Output of above code:

{'brian': '12pm-2pm', 'sophia': '10am-12pm', 'alec': '2pm-4pm'}

If you have any doubts then you can ask in comment section. Thank you.