In Python, you can add new keys to a dictionary by assigning a value to a new key or an existing key that does not exist. Here’s an example:
# Create a dictionary with some initial key-value pairs
my_dict = {‘key1’: ‘value1’, ‘key2’: ‘value2’}
# Add a new key-value pair to the dictionary
my_dict[‘key3’] = ‘value3’
# Print the updated dictionary
print(my_dict)
In this example, a new key-value pair 'key3': 'value3' is added to the dictionary by assigning a value to a new key 'key3'. The updated dictionary is printed to the console, which will output:
If the key already exists in the dictionary, the value associated with that key will be overwritten:
# Update the value of an existing key in the dictionary
my_dict[‘key2’] = ‘new_value2’
# Print the updated dictionary
print(my_dict)
In this example, the value of the existing key 'key2' is updated to 'new_value2'. The updated dictionary is printed to the console, which will output:
So, whether you want to add a new key or update an existing key, you can use the same syntax to assign a value to the dictionary using the key as the index.
- sunny asked 1 month ago
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