Sometimes, we want to rename a dictionary key with Python.

In this article, we’ll look at how to rename a dictionary key with Python.

How to rename a dictionary key with Python?

To rename a dictionary key with Python, we can use the dictionary’s pop method.

For instance, we write:

d = {0: 0, 1: 1, 2: 2, 3: 3}
k_old = 0
k_new = 4
d[k_new] = d.pop(k_old)
print(d)

We have the dictionary d, and we want to change the key of the first entry from 0 to 4.

To do this, we call d.pop with k_old to remove the the entry with key 0.

And then we set the entry with key k_new to the dictionary entry value returned by pop, which is the value 0.

Therefore, d is {1: 1, 2: 2, 3: 3, 4: 0} according to the print output.

Conclusion

To rename a dictionary key with Python, we can use the dictionary’s pop method.