How to use a Custom Function In Python
For more complex scenarios or to improve code readability, you can define a custom function to rename dictionary keys.
Explanation
- Function Definition: The
rename_key
function takes a dictionary, the old key, and the new key as arguments. - Check and Rename: The function checks if the old key exists in the dictionary, then renames it by adding a new key-value pair and removing the old key.
def rename_key(dictionary, old_key, new_key):
if old_key in dictionary:
dictionary[new_key] = dictionary.pop(old_key)
# Original dictionary
my_dict = {'old_key': 'value', 'another_key': 'another_value'}
# Rename 'old_key' to 'new_key'
rename_key(my_dict, 'old_key', 'new_key')
print(my_dict)
Output
{'another_key': 'another_value', 'new_key': 'value'}
How to Change the name of a key in dictionary?
Dictionaries in Python are a versatile and powerful data structure, allowing you to store key-value pairs for efficient retrieval and manipulation. Sometimes, you might need to change the name of a key in a dictionary. While dictionaries do not directly support renaming keys, there are several ways to achieve this by creating a new key-value pair and deleting the old one. In this article, we will explore different methods to change the name of a key in a dictionary.
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