What is the output of the following? x = ("apple", "banana", "cherry") y = list(x) y[1] = "kiwi" x = tuple(y) print(x)

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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**Problem Statement:**

What is the output of the following code?

```python
x = ("apple", "banana", "cherry")
y = list(x)
y[1] = "kiwi"
x = tuple(y)

print(x)
```

**Explanation:**

1. **Tuple Creation:**  
   The initial tuple `x` is defined as `("apple", "banana", "cherry")`.

2. **Conversion to List:**  
   The tuple `x` is converted to a list `y` using the `list()` function. Now, `y` is `["apple", "banana", "cherry"]`.

3. **Modification:**  
   The second element of the list `y` (index 1) is changed from `"banana"` to `"kiwi"`. So, `y` becomes `["apple", "kiwi", "cherry"]`.

4. **Conversion Back to Tuple:**  
   The modified list `y` is then converted back to a tuple `x` using the `tuple()` function. So now, `x` is `("apple", "kiwi", "cherry")`.

5. **Output:**  
   The `print(x)` statement outputs the modified tuple:  
   `('apple', 'kiwi', 'cherry')`

**Key Concepts:**

- Tuples are immutable, meaning their elements cannot be changed directly. To modify a tuple, it must first be converted to a list.
- Lists are mutable, so elements can be updated, removed, or added.
- After modification, lists can be converted back to tuples if immutability is desired again.
Transcribed Image Text:**Problem Statement:** What is the output of the following code? ```python x = ("apple", "banana", "cherry") y = list(x) y[1] = "kiwi" x = tuple(y) print(x) ``` **Explanation:** 1. **Tuple Creation:** The initial tuple `x` is defined as `("apple", "banana", "cherry")`. 2. **Conversion to List:** The tuple `x` is converted to a list `y` using the `list()` function. Now, `y` is `["apple", "banana", "cherry"]`. 3. **Modification:** The second element of the list `y` (index 1) is changed from `"banana"` to `"kiwi"`. So, `y` becomes `["apple", "kiwi", "cherry"]`. 4. **Conversion Back to Tuple:** The modified list `y` is then converted back to a tuple `x` using the `tuple()` function. So now, `x` is `("apple", "kiwi", "cherry")`. 5. **Output:** The `print(x)` statement outputs the modified tuple: `('apple', 'kiwi', 'cherry')` **Key Concepts:** - Tuples are immutable, meaning their elements cannot be changed directly. To modify a tuple, it must first be converted to a list. - Lists are mutable, so elements can be updated, removed, or added. - After modification, lists can be converted back to tuples if immutability is desired again.
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