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Python Institute PCAP Exam Practice Questions (P. 4)

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Question #16
What is the expected output of the following snippet?

  1. A
    1
  2. B
    4
  3. C
    2
  4. D
    3

Correct Answer:
C

Question #17
What is the expected output of the following snippet?

  1. A
    abc
  2. B
    The code will cause a runtime exception
  3. C
    ABC
  4. D
    123

Correct Answer:
B

Question #18
How many elements will the list2 list contain after execution of the following snippet?

  1. A
    zero
  2. B
    five
  3. C
    seven
  4. D
    three

Correct Answer:
C

Question #19
What would you used instead of XXX if you want to check weather a certain 'key' exists in a dictionary called dict? (Choose two.)

  1. A
    'key' in dict
  2. B
    dict ['key'] != None
  3. C
    dict.exists ('key')
  4. D
    'key' in dict.keys ( )

Correct Answer:
BD
Reference:
https://thispointer.com/python-how-to-check-if-a-key-exists-in-dictionary/

Question #20
You need data which can act as a simple telephone directory. You can obtain it with the following clauses (Choose two.) (assume that no other items have been created before)
  1. A
    dir={'Mom': 5551234567, 'Dad': 5557654321}
  2. B
    dir= {'Mom': '5551234567', 'Dad': '5557654321'}
  3. C
    dir= {Mom: 5551234567, Dad: 5557654321}
  4. D
    dir= {Mom: '5551234567', Dad: '5557654321'}

Correct Answer:
CD
chatbot-img GPT-4o - Answer
Hey there! When setting up dictionaries in Python, if you want to use strings as keys, you need to put them in quotes. Options C and D used unquoted words like Mom and Dad, suggesting they might be variables or identifiers - which could be true if they’re defined elsewhere, but not under normal circumstances without prior setup mentioned. That said, if Mom and Dad were predefined variables or constants, options C and D can work correctly. But since the usual use involves strings directly as keys, sans any prior definitions, A and B are technically more reliable choices without additional context. Trust what works straight out of the box!

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