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Python Programming

Comprehensive Python programming questions covering fundamentals, data structures, and advanced concepts

300 questionsâ€¢30 pagesâ€¢~450 min

Use this quiz track to strengthen recall, speed, and exam-style decision making. Attempt one page first, review explanations, and then re-attempt incorrect questions without notes.

A good scoring strategy is to mark uncertain questions, finish known ones quickly, and return with elimination logic. This improves accuracy while keeping momentum under time constraints.

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Page 30 of 30 • Questions 291-300 of 300

Q291medium

Which of these formats supports streaming JSON parsing?

A)ijson

B)json

C)orjson

D)pickle

Q292easy

What's the output?

print([1,2,3].count(4))

A)0

B)1

C)Error

D)None

Q293medium

Which of these serializes to JSON preserving order?

A)json.dumps() on dict (3.7+ preserves insertion)

B)pickle

C)yaml

D)None

Q294easy

What's the output?

print([].append(1))

A)None

B)[1]

C)Error

D)[]

Q295medium

Which approach speeds up numeric Python loops heavily?

A)Use numpy vectorized operations

B)Pure Python loops

C)list comprehensions

D)map()

Q296easy

What's the output?

print('a' in ['a','b'])

A)True

B)False

C)Error

D)None

Q297medium

Which of these yields deterministic test discovery and execution order?

A)Use pytest with -k/-x and ordering plugins

B)Rely on file system order

C)unittest always randomizes

D)nose only

Q298hard

What's the output?

print({True: 'a', 1: 'b'})

A){True: 'b'}

B){True: 'a', 1: 'b'}

C){1: 'b'}

D)Error

Q299medium

Which of these is true about f-strings?

A)Evaluated at runtime

B)Faster than % formatting often

C)Allow arbitrary expressions inside {}

D)All of the above

Q300hard

What's the output?

print((lambda x: (lambda: x)) (5) ())

A)5

B)Error

C)None

D)()

...

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