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Python – Extracting Kth Key in Dictionary

  • Last Updated : 17 Dec, 2019

Many times, while working with Python, we can have a situation in which we require to get the Kth key of dictionary. There can be many specific uses of it, either for checking the indexing and many more of these kind. This is useful for Python version 3.8 +, where key ordering are similar as insertion ordering. Let’s discuss certain ways in which this task can be performed.

Method #1 : Using list() + keys()
The combination of above methods can be used to perform this particular task. In this, we just convert the entire dictionaries’ keys extracted by keys() into a list and just access the Kth key.




# Python3 code to demonstrate working of
# Extracting Kth Key in Dictionary
# Using keys() + list()
  
# initializing dictionary
test_dict = {'Gfg' : 1, 'is' : 2, 'best' : 3}
  
# printing original dictionary
print("The original dictionary is : " + str(test_dict))
  
# initializing K 
K = 1
  
# Using keys() + list()
# Extracting Kth Key in Dictionary
res = list(test_dict.keys())[K]
  
# printing Kth key
print("The Kth key of dictionary is : " + str(res))
Output :
The original dictionary is : {'best': 3, 'Gfg': 1, 'is': 2}
The Kth key of dictionary is : Gfg

 

Method #2 : Using next() + iter()
This task can also be performed using these functions. In this, we just take the Kth next key using next() and iter function is used to get the iterable conversion of dictionary items.






# Python3 code to demonstrate working of
# Extracting Kth Key in Dictionary
# Using next() + iter()
  
# initializing dictionary
test_dict = {'Gfg' : 1, 'is' : 2, 'best' : 3}
  
# printing original dictionary
print("The original dictionary is : " + str(test_dict))
  
# initializing K 
K = 1
  
# Using next() + iter()
# Extracting Kth Key in Dictionary
test_dict = iter(test_dict)
for i in range(0, K + 1) :
    res = next(test_dict)
  
# printing Kth key
print("The Kth key of dictionary is : " + str(res))
Output :
The original dictionary is : {'best': 3, 'Gfg': 1, 'is': 2}
The Kth key of dictionary is : Gfg

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