How to use the update() Method In Python
You can use the update()
method to add new key-value pairs and then remove the old key.
Explanation
- Pop the Old Key:
my_dict.pop('old_key')
removes the old key and retrieves its value. - Update with New Key:
my_dict.update({'new_key': value})
adds the new key-value pair to the dictionary.
# Original dictionary
my_dict = {'old_key': 'value', 'another_key': 'another_value'}
# Create a new key-value pair and remove the old key
my_dict.update({'new_key': my_dict.pop('old_key')})
print(my_dict) # Output: {'another_key': 'another_value', 'new_key': 'value'}
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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