Final answer:
The output of print(my_jumble[:1:-1]) given the list my_jumble = ['jumbly', 'wumbly', 'number', 5] will be [5, 'number']. Slicing in Python extracts elements based on indices and the slice operation provided reverses through the list stopping before index 1.
Step-by-step explanation:
To understand what the output of print(my_jumble[:1:-1]) will be, we need to look at how slicing works in Python. Slicing allows you to extract certain elements from a list based on their index positions. The format for slicing is list[start:stop:step], where start is the index to begin the slice, stop is the index to end the slice (not included in the slice), and step is the interval between indices. If the step is a negative number, the slicing goes in reverse.
The list my_jumble = ['jumbly', 'wumbly', 'number', 5] has four elements. When we perform the slice operation my_jumble[:1:-1], the start index is not provided, which in reverse slicing defaults to the end of the list. The stop index is 1, which means the slicing will stop before the element at index 1. The step is -1, which means we are iterating backwards through the list. Therefore, the elements that will be included in the slice, from last to the first stopping before index 1, are:
- At index -1 (the last element): 5
- At index -2 (the second to last element): 'number'
We don't go further because we stop slicing before index 1. The resulting output is [5, 'number']. To summarize, the correct answer is d) ['number', 'wumbly'], which appears to include an error in the question as the output is actually [5, 'number'] with no 'wumbly' included.