Embercode: AI-powered software engineer course

1. What happens when this program runs? ``

python
values = [1, 2]
for v in values:
    if v > 2:
        largest = v
print(largest)

``

Prints 0Prints NoneNameError: name 'largest' is not definedPrints 2

2. What does this program print? ``

python
def biggest_with_zero(values):
    best = 0
    for v in values:
        if v > best:
            best = v
    return best

print(biggest_with_zero([-2, -8]))

``

0-2-8NameError: name 'best' is not defined

3. What does this program print? ``

python
is_open = False
if (is_open := True):
    print('open')
print(is_open)

``

Prints nothing, then FalsePrints open, then TruePrints False, then FalsePrints nothing, then True

4. Why does Python reject if count = 0: but accept if (flag := False):?

Python allows = only for bool names inside an ifPython converts an int to a bool for count but not for flagA plain = is a statement, so it cannot sit in an if, while := is an expression that gives back the value it storesThe second line works only because flag is named with a capital letter

5. What happens in Python when code reads a name that was never assigned on that path?

It raises NameError at the top level, or UnboundLocalError inside a function, and the program stopsIt reads 0, the usual default for a numberIt reads NoneIt reads leftover values from an earlier call

Uninitialised values and booleans