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I have this dictionary and I don’t want to print (the key and the value) if they already exist (as value and key) or vice versa.

I want to print (orange and apple) and (Strawberry and Grapes) for once.

{
'Orange'    : ‘Apple’,
‘Orange'    : ‘Banana’, 
’Strawberry': ‘Grapes’, 
‘Apple'     : ‘Orange’,
‘Blackberry': ‘Banana’, 
’Cherry'    : ‘Fig’, 
’Grapes'    : ‘Strawberry’ 
 }

Expexted output:

Orange Apple
Orange Banana
Strawberry Grapes
BlackBerry Banana
Cherry Fig
Mona0655
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    You can't have a dictionary with duplicate keys. If "Orange" is the key for "apple", it can't be the key for "banana". Please provide an actual legal dictionary. – Kevin Feb 04 '16 at 19:34

1 Answers1

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Having duplicate keys sort of violates the purpose of a dictionary in python. There are ways around it like here but I wouldn't suggest it.

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Leustad
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