[Tutor] How to print corresponding keys in Dictionary

[Raúl Cumplido]

Hi,

Keys are unique in a dictionaire but values aren't. What do you want to
print if you have the next dictionaire:

dict = {'a' : 1, 'b' : 1}

If you are using python 2.7 you can use dictionary comprehensions to swap
keys for values:

>>> d={'a':1,'b':2,'c':3}
>>> new_dict = {v : k for k,v in d.iteritems()}
>>> new_dict
{1: 'a', 2: 'b', 3: 'c'}

but if you're values are repeated you will loose some keys:
>>> dict = {'a' : 1, 'b':1}
>>> {v : k for k,v in dict.iteritems()}
{1: 'b'}

HTH,

Raúl

On Mon, Oct 24, 2011 at 3:10 PM, Praveen Singh <c2praveen30jun at gmail.com>wrote:

> In Dictionary-
> How to print corresponding keys if the values of dictionary is given??
>
> -d={'a':1,'b':2,'c':3}
> -i can print the corresponding values by using get() method-
> - d.get('a')
> -1
>
> What if i have to print reverse???
>
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-- 
Raúl Cumplido
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