A-C, identify the errors and rewrite the statement. Save your code as PE4_2.py. myList = ['apple','banana','cherry'] print (myList [3]) A Debug B print (myList[-1:-4]) Debug word - 'sea' word[0] - 'p' print (word) C Debug
A-C, identify the errors and rewrite the statement. Save your code as PE4_2.py. myList = ['apple','banana','cherry'] print (myList [3]) A Debug B print (myList[-1:-4]) Debug word - 'sea' word[0] - 'p' print (word) C Debug
Computer Networking: A Top-Down Approach (7th Edition)
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Need help with Python.
![Certainly! Here is a transcription and explanation of the given image content designed for an educational context:
---
**Programming Exercise: Debugging List and String Operations**
**Objective:** Identify the errors and correct the given code snippets. Save your corrected code as `PE4_2.py`.
---
**Exercise 2:**
In this exercise, you are given three code snippets (A, B, and C) that have errors related to list and string operations. Your task is to identify these errors and rewrite the statements correctly.
---
**A. Code Snippet:**
```python
myList = ['apple', 'banana', 'cherry']
print(myList[3])
```
**Error:** The list index is out of range. Lists in Python are zero-indexed, meaning the first element has an index of 0. The list `myList` contains three elements, so valid indices are 0, 1, and 2. Accessing index 3 will result in an `IndexError`.
**Correction:**
To print the third element, use index 2:
```python
print(myList[2]) # Corrected: prints 'cherry'
```
---
**B. Code Snippet:**
```python
print(myList[-1:-4])
```
**Error:** The slicing operation is incorrect. When slicing, the end index should be greater than the start index for a negative step. The slice `[-1:-4]` with step omitted defaults to 1, resulting in an empty list.
**Correction:**
If the objective is to reverse the list using slicing:
```python
print(myList[::-1]) # Corrected: prints the list in reverse order
```
---
**C. Code Snippet:**
```python
word = 'sea'
word[0] = 'p'
print(word)
```
**Error:** Strings in Python are immutable, meaning their elements cannot be changed after assignment. Attempting to directly modify an individual character in a string results in a `TypeError`.
**Correction:**
To change the first character, create a new string:
```python
word = 'p' + word[1:]
print(word) # Corrected: prints 'pea'
```
---
**Instructions:** Review the corrected code snippets and save them as `PE4_2.py` in your development environment. Test each snippet to ensure it executes without errors and produces the expected output.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F31e55ccf-8f70-4a32-a28b-4816d60dca82%2Fd51e1781-315d-4d76-8abe-ec326b0b04ac%2Fe3r2dxn_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Certainly! Here is a transcription and explanation of the given image content designed for an educational context:
---
**Programming Exercise: Debugging List and String Operations**
**Objective:** Identify the errors and correct the given code snippets. Save your corrected code as `PE4_2.py`.
---
**Exercise 2:**
In this exercise, you are given three code snippets (A, B, and C) that have errors related to list and string operations. Your task is to identify these errors and rewrite the statements correctly.
---
**A. Code Snippet:**
```python
myList = ['apple', 'banana', 'cherry']
print(myList[3])
```
**Error:** The list index is out of range. Lists in Python are zero-indexed, meaning the first element has an index of 0. The list `myList` contains three elements, so valid indices are 0, 1, and 2. Accessing index 3 will result in an `IndexError`.
**Correction:**
To print the third element, use index 2:
```python
print(myList[2]) # Corrected: prints 'cherry'
```
---
**B. Code Snippet:**
```python
print(myList[-1:-4])
```
**Error:** The slicing operation is incorrect. When slicing, the end index should be greater than the start index for a negative step. The slice `[-1:-4]` with step omitted defaults to 1, resulting in an empty list.
**Correction:**
If the objective is to reverse the list using slicing:
```python
print(myList[::-1]) # Corrected: prints the list in reverse order
```
---
**C. Code Snippet:**
```python
word = 'sea'
word[0] = 'p'
print(word)
```
**Error:** Strings in Python are immutable, meaning their elements cannot be changed after assignment. Attempting to directly modify an individual character in a string results in a `TypeError`.
**Correction:**
To change the first character, create a new string:
```python
word = 'p' + word[1:]
print(word) # Corrected: prints 'pea'
```
---
**Instructions:** Review the corrected code snippets and save them as `PE4_2.py` in your development environment. Test each snippet to ensure it executes without errors and produces the expected output.
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