Using list slicing, how would you print ['a', 'b', 'c', 'd', 'e'] given the following list?

li = ['a', 'b', 'c', 'd', 'e', 'f']

Question

Using list slicing, how would you print ['a', 'b', 'c', 'd', 'e'] given the following list?

li = ['a', 'b', 'c', 'd', 'e', 'f']

BlackTom AI · Accepted Answer

Question: Using list slicing, how would you print ['a', 'b', 'c', 'd', 'e'] given the following list?

li = ['a', 'b', 'c', 'd', 'e', 'f']

Options:
- print(li[::5])
- print(li[5:])
- print(li[5])
- print(li[:5])

Option 1: print(li[::5]). This uses a slice with a start of 0 (implicit), no end (implicit), and a step of 5. It would select elements at indices 0, 5, 10, ... up to the end of the list. In this list, that yields ['a', 'f'], not the full five-element sequence requested. Therefore this is incorrect.

Option 2: print(li[5:]). This starts at index 5 and goes to the end of the list. That would produce ['f'], a single element, not ['a', 'b', 'c', 'd', 'e']. This is incorrect because it omits the initial elements and only returns from 'f' onward.

Option 3: print(li[5]). This accesses the single element at index 5, which is 'f'. It does not produce a list and certainly not the requested five-element slice. This is incorrect for two reasons: it returns a scalar, not a sublist.

Option 4: print(li[:5]). This uses a slice with a start of 0 (implicit) and an end of 5 (exclusive). It selects elements at indices 0 through 4, which correspond to 'a', 'b', 'c', 'd', 'e'. This exactly matches the desired output ['a', 'b', 'c', 'd', 'e']. Therefore this is the correct choice.

In summary, understanding Python list slicing shows that [:5] captures elements from the start up to (but not including) index 5, yielding the five-element prefix of the list, which is the target output. The other options either select elements with an incorrect range, or pick a single element, or use a step that skips most of the list. Hence, the correct option is print(li[:5]).

Using list slicing, how would you print ['a', 'b', 'c', 'd', 'e'] given the following list? li = ['a', 'b', 'c', 'd', 'e', 'f']单项选择题

类似问题

What is output by the following code segment? values = ["Q", "W", "E", "R", "T", "Y"] print(values[2 : 4])

Consider the following code segment: x = [5, 3, 7, 9, 1] y = x[3 : ] print(y) What is displayed when it executes?

What statement regarding the use of lists is accurate?

Given that: my_list = [42, 'Life, the Universe, and Everything', 'A duck', 3.14159] What value does this expression reduce to: my_list[:2] Do not forget to use the correct notation! As an example. strings have 'quotes' and floats have decimal points ...

a=[3, 2, 1, 'hello', [10, -10], 5, 6] Which code snippet below will return this output?: ['hello', [10, -10]]

Given the list sodas = ['Coke', 'Pepsi', 'Root Beer', 'Sprite', 'Mountain Dew'] which code below will return ['Coke', 'Pepsi', 'Root Beer']?

Given the list: numbers = [5, 10, 15, 20, 25, 30] Which slice operator extracts the following three elements? [15, 20, 25]

Consider the following code segment: x = [5, 3, 7, 9, 1] y = x[2 : 4] print(y) What is displayed when it executes?

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单