Python Dictionaries – Rename dictionary key

In this post we will be creating a Python script that will rename a dictionary key. Data in dictionaries in stored in key and value pairs, whereby each item will consist of a key and a value.

See below our dictionary for this example. Here our keys are a set of letters and the values are a sequence of numbers.

dictionary={'a':1, 'b':2, 'c':3, 'd':4, 'e':5}

See the snippet of Python code below where we rename the dictionary key containing the letter ‘a’ to the letter ‘x’. We start by creating a new dictionary item and give it the key ‘x’ and its value the same as ‘a’. We then delete the ‘a’ key and print the dictionary to output.

dictionary['x'] = dictionary['a']
del dictionary['a']

The above would return the following.

{'b': 2, 'c': 3, 'd': 4, 'e': 5, 'x': 1}

Take a look at some of our other content around the Python programming language by clicking here.

Leave a Reply