Python Quiz

451. What will be the output?

x = 5
def outer():
    x = 10
    def inner():
        nonlocal x
        x += 1
        return x
    return inner()

print(outer())

6

11

10

Error

452. What does the following code return?

def f(a, b, *, c):
    return a + b + c

print(f(1, 2, c=3))

6

TypeError

SyntaxError

None

453. Which data structure is best suited for implementing a LIFO (Last-In First-Out) system?

list

queue.Queue

deque

heapq

454. What is the result of:

print(repr("\tTabbed"))

'\tTabbed'

'Tabbed'

'\\tTabbed'

'\Tabbed'

455. Which keyword allows a variable to be modified in the outer enclosing function but not global scope?

outer

nonlocal

global

static

456. What does `__name__ == '__main__'` check?

If a module was imported

If a module is built-in

If the script is being run directly

If the script has a main() function

457. What does the following code return?

{True: 'yes', 1: 'no', 1.0: 'maybe'}

{True: 'yes', 1: 'no', 1.0: 'maybe'}

{True: 'maybe'}

{1.0: 'maybe'}

{True: 'maybe'}

458. Which function can be used to introspect attributes of a module or object?

inspect()

type()

dir()

vars()

459. What does `setdefault()` do in a dictionary?

Replaces a value if it exists

Adds a key only if it doesn't exist

Deletes a key

Returns the entire dictionary

460. Which of the following can be used to execute dynamic Python code?

eval()

exec()

compile()

All of the above