Python Get the first key in a dictionary
This tutorial explains how to get the first key in a Python dictionary. The so-called first key refers to the key stored in the first index of the dictionary.
In Python 3.7 and above, when dictionaries are ordered, we can get the first key iter()
by first converting the dictionary into an iterable object using the get_key function and then next
getting its first index key using the get_key function.
The second way is list()
to convert the dictionary into a list using the function and then 0
get the key at index .
A third approach is to use for
a loop to get the first key in the dictionary.
Use iter()
the function to get the first key in the dictionary
The code example given below shows how we can get the first key in a Python dictionary using the iter()
and functions.next()
my_dict = {"London": 2, "New York": 1, "Lahore": 6, "Tokyo": 11}
print(next(iter(my_dict)))
Output:
London
Use list()
the function to get the first key in the dictionary
We can also convert the type to a list using list()
the function first dict
, and then 0
get the first key at index .
my_dict = {"London": 2, "New York": 1, "Lahore": 6, "Tokyo": 11}
print(list(my_dict.keys())[0])
Output:
London
Use for
loop to get the first key in the dictionary
Another way is to use for
a loop to get the first key in the dictionary. After we get the first key of the dictionary, we can break the loop.
Code example:
my_dict = {"London": 2, "New York": 1, "Lahore": 6, "Tokyo": 11}
for key, value in my_dict.items():
print(key)
break
Output:
London
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