How to acess the values in the dictionay?#dict={"one":1,"two":2}.I want print one,two by acessing 1,2. is it possible.pls help.

Question

beginner

Answer 1

You can use dictionary `items` method, it returns pairs of key-value for each dictionary item.

my_dict = { 'one' : 1, 'two' : 2 }
elms = my_dict.items()
#print(elms) # uncomment to see what it's like
for elm in elms:
if elm[1] == 2:
print(elm[0])
break

Answer 2

You would like to access a key by its value instead of the value by its key? Do I understand that right?

Maybe you could do sth like this:

tmp = list(dict.items())

Than you get a list of tuples: 1st element of each tuple is the key, the remaining ones are the values
You could loop through tmp until the values 1 and 2 are found and than print their key which will be the 1st element of the tuple

Answer 3

If you're dict has strictly only all integers in a range, you could be more efficient by building a reverse list of your dict (so later access will be quickest):

rev_dict = sorted(dict.keys(),key=lambda k: dict[k])

So, if the range start at n, you just have to do rev_dict[x-n] to get the key of the value x ;)