Question bank

Pick an answer to see if you're right — with an explanation.

PythonMedium

Which `json.dumps` argument keeps Hindi text readable instead of `\u` escapes?

aindent=2

bsort_keys=True

cdefault=str

densure_ascii=False

PythonHard

What does this print?

a = [[1, 2], [3, 4]]
b = a.copy()
b[0].append(99)
print(a[0])

a[1, 2]

b[1, 2, 99]

c[[1, 2, 99], [3, 4]]

dAttributeError

PythonHard

Why use `functools.wraps` inside a decorator?

aIt copies the wrapped function's name, docstring and metadata onto the wrapper

bIt makes the wrapper run faster

cIt caches return values

dIt is required for decorators to accept arguments

PythonHard

What is printed?

fs = [lambda: i for i in range(3)]
print(fs[0]())

dTypeError

PythonHard

What does this print?

def add(item, bucket=[]):
    bucket.append(item)
    return bucket
add(1)
print(add(2))

a[2]

b[1, 2]

c[1]

d[]