Python | Get the first key in dictionary

Many times, while working with Python, we can have a situation in which we require to get the initial key of dictionary. There can be many specific uses of it, either for checking the indexing and many more of these kind. 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 first key.

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# Python3 code to demonstrate working of
# Getting first 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))
  
# Using keys() + list()
# Getting first key in dictionary
res = list(test_dict.keys())[0]
  
# printing initial key
print("The first key of dictionary is : " + str(res))

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Output :

The original dictionary is : {'best': 3, 'Gfg': 1, 'is': 2}
The first key of dictionary is : best

 

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

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# Python3 code to demonstrate working of
# Getting first 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))
  
# Using next() + iter()
# Getting first key in dictionary
res = next(iter(test_dict))
  
# printing initial key
print("The first key of dictionary is : " + str(res))

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Output :

The original dictionary is : {'best': 3, 'Gfg': 1, 'is': 2}
The first key of dictionary is : best


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