List Length After Execution

Oct 13, 2025 by miodeya.com 5 views

Problem Description

In this problem, we are given a list a containing integers and asked to find the length of the list after executing the following statements:

a = [2, 6, 8, 10, 67, 8, 90]
a.remove(8)
print(len(a))

Understanding the Problem

To solve this problem, we need to understand the behavior of the remove() method in Python. The remove() method removes the first occurrence of the specified value from the list. If the value is not found in the list, it raises a ValueError.

Execution of Statements

Let's execute the statements step by step:

a = [2, 6, 8, 10, 67, 8, 90]: This statement creates a list a containing the specified integers.
a.remove(8): This statement removes the first occurrence of the value 8 from the list a. Since there are two occurrences of 8 in the list, this statement will remove the first one.
print(len(a)): This statement prints the length of the list a after the removal of the value 8.

List Length After Execution

After executing the statements, the list a will be:

[2, 6, 8, 10, 67, 90]

The value 8 was removed from the list, but the second occurrence of 8 was not removed because the remove() method only removes the first occurrence of the specified value.

Correct Answer

The length of the list a after the execution of the statements is:

6

Explanation

The length of the list a is 6 because there are 6 elements remaining in the list after the removal of the value 8.

Conclusion

In conclusion, the length of the list a after the execution of the statements is 6. This is because the remove() method only removes the first occurrence of the specified value from the list, and the second occurrence of 8 was not removed.

Code Snippet

Here is the code snippet that demonstrates the execution of the statements:

a = [2, 6, 8, 10, 67, 8, 90]
print("Original List:", a)
a.remove(8)
print("List after removal:", a)
print("Length of List:", len(a))

Output

The output of the code snippet will be:

Original List: [2, 6, 8, 10, 67, 8, 90]
List after removal: [2, 6, 8, 10, 67, 90]
Length of List: 6

Final Answer

Q1: What is the purpose of the `remove()` method in Python?

A1: The remove() method in Python is used to remove the first occurrence of a specified value from a list.

Q2: What happens if the value to be removed is not found in the list?

A2: If the value to be removed is not found in the list, the remove() method raises a ValueError.

Q3: How many occurrences of the value `8` are removed from the list?

A3: Only the first occurrence of the value 8 is removed from the list. The second occurrence of 8 remains in the list.

Q4: What is the length of the list after the execution of the statements?

A4: The length of the list after the execution of the statements is 6.

Q5: Why is the length of the list 6 and not 5?

A5: The length of the list is 6 because the second occurrence of the value 8 was not removed from the list. The remove() method only removes the first occurrence of the specified value.

Q6: What is the output of the code snippet?

A6: The output of the code snippet is:

Original List: [2, 6, 8, 10, 67, 8, 90]
List after removal: [2, 6, 8, 10, 67, 90]
Length of List: 6

Q7: What is the final answer to the problem?

A7: The final answer to the problem is 6.

Q8: Why is the `remove()` method used in this problem?

A8: The remove() method is used in this problem to demonstrate the behavior of the method when removing a value from a list.

Q9: What is the purpose of the `len()` function in this problem?

A9: The len() function is used in this problem to get the length of the list after the execution of the statements.

Q10: What is the output of the `print()` function in this problem?

A10: The output of the print() function in this problem is the length of the list after the execution of the statements.

Conclusion

In conclusion, the remove() method in Python is used to remove the first occurrence of a specified value from a list. The length of the list after the execution of the statements is 6 because the second occurrence of the value 8 was not removed from the list.