Embercode: AI-powered software engineer course

1. What does this code print? ``

python
k = 2
m = k + (k := k + 1) * 3
print(m, k)

``

11 311 29 36 3

2. This loop is meant to count to 3, but it prints 0. What is the bug? ``

python
count = 0
for n in range(3):
    count + 1
print(count)

``

The loop should use range(4)count + 1 computes a number and throws it away, so nothing is stored; write count += 1 to store the resultcount + 1 only works inside a while loopn is never read, which stops the loop early

3. What does this line print? ``

python
print(10 - 4 - 3)

``

9, because the right subtraction runs first-3, because the two minus signs cancel out6, because the first two numbers are worked out before the last3, because the left subtraction runs first, giving (10 - 4) - 3

4. With i = 4, the line i = (i := i + 1) - 1 leaves i equal to 5. True or false?

True, because the walrus sets i to 5 and the assignment keeps that valueFalse, because the final store writes 4 back into i

5. What does this code print? ``

python
w = [1, 2, 3]
p = 1
w[p] = (p := p + 1) * 10
print(w, 'p=' + str(p))

``

[1, 20, 3] p=2[1, 10, 3] p=2[1, 2, 20] p=2[1, 20, 3] p=1

Evaluation order and precedence in Python