Replace values

To replace values in a dictionary, you can use the following methods:

1. Direct assignment:

Python

my_dict = {"name": "Alice", "age": 30}

my_dict["age"] = 31

print(my_dict)  # Output: {'name': 'Alice', 'age': 31}

2. update() method:

Python

my_dict = {"name": "Alice", "age": 30}

my_dict.update({"age": 31})

print(my_dict)  # Output: {'name': 'Alice', 'age': 31}

Key points:

• Both methods directly modify the existing dictionary.

• The update() method can be used to replace multiple values at once.

• If the key doesn't exist, using direct assignment will create a new key-value pair, while update() will overwrite the existing value.

Example:

Python

person = {"name": "John", "age": 35, "city": "New York"}

# Replace the value for "age"

person["age"] = 32

# Replace multiple values using update()

person.update({"city": "Los Angeles", "occupation": "Engineer"})

print(person)  # Output: {'name': 'John', 'age': 32, 'city': 'Los Angeles', 'occupation': 'Engineer'}

By understanding these methods, you can effectively replace values in dictionaries to update your data.