What's wrong in the code below ? Help please.

Question

"""
Inverting dictionaries. Take a dictionary as input amd return
one as output, but the values are now keys
and vice versa.
"""
my_dict = {"john" : 23, "mike" : 24, "argus" : 27}
inv_dict = {}

for k, v in my_dict.items () :
inv_dict [v] = inv_dict[k]

print (inv_dict)

Answer 1

my_dict = {"john" : 23, "mike" : 24, "argus" : 27}
inv_dict = {}

for k, v in my_dict.items () :
inv_dict [v] = k

print (inv_dict)

Answer 2

Yep. The proper syntax to appending items to a dictionary is:

dictionary[key] = value.

In your code, the line became:

dictionary[key] = dictionary [value]

which doesn't really work. I guess it was just a typo on your side. Masquerade

Answer 3

My guess is that in the for loop, each value of 'k' is a dictionary item so you just need to refer to 'k' as per Hatsy Rei's solution.

Answer 4

Aah! It wasn't a typo, I have to admit. But I get my mistake now. Thanks a lot Duncan and Hatsy Rei .

Answer 5

oh wow! you are such a life saver, Hatsy ^_^.

Answer 6

Hatsy Rei , can you just do me one more favour and explain what is going wrong in my code. I still don't understand. Sorry.