Question

1. what will be displayed by the following code?

points = 2.5, 4, 1, 7.5, 1.5, 8
points.sort()
print(points)
2.5, 4, 1, 7.5, 1.5, 8
2.5, 4, 1.5, 8, 1, 7.5
1, 1.5, 2.5, 4, 7.5, 8
8, 7.5, 4, 2.5, 1.5, 1
1, 7.5, 1.5, 8, 2.5, 4

1. assume x = 1, 2, 3, 4, 5, 5, 6, 5, 9. match the function with its output.
2. len(x1) a. 5
3. len(x2) b. 3
4. len(x0) c. 4

d. 2
e. 1

Explanation:

Step1: Analyze list sorting in Python

In Python, when you call the sort() method on a list of lists, it sorts the lists based on their first - element values. Given points = [[2.5, 4], [1, 7.5], [1.5, 8]], sorting will compare the first elements 2.5, 1, and 1.5. The sorted order of the first - elements is 1 < 1.5 < 2.5. So the sorted list of lists will be [[1, 7.5], [1.5, 8], [2.5, 4]].

Step2: Analyze len() function for sub - lists

For x = [[1, 2], [3, 4, 5], [5, 6, 5, 9]], x[1] is the list [3, 4, 5], and len(x[1]) returns the number of elements in x[1], which is 3. x[2] is the list [5, 6, 5, 9], and len(x[2]) returns 4. x[0] is the list [1, 2], and len(x[0]) returns 2.

Answer:

1. E. [[1, 7.5], [1.5, 8], [2.5, 4]]
2. 1. b. 3
3. c. 4
4. d. 2