Lists: What Does This Print

What does this print? · Beginner · about 6 min

Read each short program and type exactly what it prints, with each printed line on its own line. If a program stops with an error, type the error's name, like TypeError.

Example

nums = [4, 5]
nums.insert(0, 3)
print(nums)

prints

[3, 4, 5]

Program 1

nums = [3, 1, 2]
nums.append([4, 5])
print(len(nums))

What it prints

Program 2

nums = [3, 1, 2]
nums.extend([4, 5])
print(nums)

What it prints

Program 3

a = [1, 2, 3]
b = a
b.append(4)
print(a)

What it prints

Program 4

a = [1, 2, 3]
b = a[:]
b.append(4)
print(a, b)

What it prints

Program 5

nums = [5, 2, 8]
result = nums.sort()
print(result)

What it prints

Program 6

nums = [10, 20, 30, 40, 50]
print(nums[1:4], nums[::2])

What it prints

Program 7
```
nums = [1, 2, 3]
print(nums[3])
```
What it prints

Program 8

nums = [4, 7, 4, 9]
nums.remove(4)
print(nums, nums.index(4))

What it prints