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user = {
    "username": "codefriends",
    "created_at": "2024-01-01",
}

user["gender"] = "male"


print(user)

# Adding and Modifying Elements in a Dictionary

A dictionary manages data through `keys`, allowing you to add new values or modify existing ones using specific keys.

To add a new key-value pair, input the key within square brackets (`[]`) and assign it a value.

```python title="Adding a Value to a Dictionary"
user = {
    "username": "codefriends",
    "created_at": "2024-01-01"
}

# Add value "male" to the "gender" key
user["gender"] = "male"
# Outputs "male"
print(user["gender"])
```

<br />

## Modifying Dictionary Values

Assigning a new value to an existing key modifies that key’s current value.

```python title="Modifying a Value in a Dictionary"
user = {
    "username": "codefriends",
    "created_at": "2024-01-01"
}

user["username"] = "geekhaus"
# Outputs "geekhaus"
print(user["username"])
```

To add a new key-value pair to a dictionary, use square brackets `[]` to specify the key and assign the value. This will add a new item to the existing dictionary.

Adding and Modifying Elements in a Dictionary

Modifying Dictionary Values

What is the correct way to add a new key-value pair to a dictionary?