Unpacking Dictionary Keys into Tuple - Python

Last Updated : 12 Jul, 2025

The task is to unpack the keys of a dictionary into a tuple. This involves extracting the keys of the dictionary and storing them in a tuple, which is an immutable sequence.
For example, given the dictionary d = {'Gfg': 1, 'is': 2, 'best': 3}, the goal is to convert it into a tuple containing the keys like ('Gfg', 'is', 'best').

Using tuple()

The simplest method to convert dictionary keys into a tuple is using the built-in tuple() function. This method directly converts the keys view into a tuple.

Python 
d= {'Gfg': 1, 'is': 2, 'best': 3}

res = tuple(d.keys())
print(str(res))

Output
('Gfg', 'is', 'best')

Explanation:

  • d.keys() returns the keys dict_keys(['Gfg', 'is', 'best']).
  • tuple(d.keys()) converts it to ('Gfg', 'is', 'best').
  • str(res) converts the tuple to the string "(Gfg, is, best)".

Table of Content

Using * operator

* operator can be used to unpack dictionary keys directly into a tuple. This is a unique method and can be very useful when we need to pass dictionary keys as arguments to other functions or manipulate them.

Python 
d= {'Gfg': 1, 'is': 2, 'best': 3}

res = (*d.keys(),)
print(str(res))

Output
('Gfg', 'is', 'best')

Explanation:

  • (*d.keys(),): This unpacks the keys into the tuple ('Gfg', 'is', 'best').
  • str(res):This converts it to the string "(Gfg, is, best)".

Using list comprehension

List comprehension can be used to extract dictionary keys and then convert them into a tuple. This approach gives more flexibility in terms of applying conditions or transformations on the keys.

Python 
d= {'Gfg': 1, 'is': 2, 'best': 3}

res = tuple([key for key in d])
print(str(res))

Output
('Gfg', 'is', 'best')

Explanation:

  • [key for key in d]: This creates the list ['Gfg', 'is', 'best'].
  • tuple([...]): This converts it to the tuple ('Gfg', 'is', 'best').
  • str(res): This converts it to the string "(Gfg, is, best)".

Using map()

map() function can be used to convert dictionary keys into a tuple. While this method is less common for this specific task, it provides a functional approach to unpacking.

Python 
d = {'Gfg': 1, 'is': 2, 'best': 3}

res = tuple(map(str, d.keys()))
print(str(res))

Output
('Gfg', 'is', 'best')

Explanation:

  • map(str, d.keys()) converts each key to a string.
  • tuple(...) converts the mapped result to a tuple ('Gfg', 'is', 'best').
  • str(res) converts it to the string "(Gfg, is, best)".
Comment

Explore