What does the pass statement do in Python?
Correct answer D. Nothing; it is a placeholder where a statement is syntactically required
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Python MCQs
Page 2 of Python multiple-choice questions with answers. Tap an option to check yourself.
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In a Python match statement, which pattern acts as a wildcard that matches any value?
Correct answer D. case _:
In which Python version was the match statement for structural pattern matching introduced?
Correct answer B. Python 3.10
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Which list method removes the first item equal to a given value?
Correct answer A. remove()
Which of these expressions creates a generator object rather than a list?
Correct answer A. (x * 2 for x in range(5))
Which expression creates an empty set in Python?
Correct answer B. set()
From which Python version is preservation of dictionary insertion order a guaranteed language feature?
Correct answer C. Python 3.7
Why can a tuple of numbers be used as a dictionary key, but a list cannot?
Correct answer A. Dictionary keys must be hashable, and lists are mutable and unhashable
In which Python version were f-strings (formatted string literals) introduced?
Correct answer A. Python 3.6
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How does str.find() differ from str.index() when the substring is not present?
Correct answer D. find() returns -1, while index() raises ValueError
What happens in Python 3 when an int calculation produces a value larger than 2**63?
Correct answer B. The int grows automatically, because integers have unlimited precision
What happens when int(“3.5”) is evaluated in Python?
Correct answer A. A ValueError is raised
When does the else block of a Python while loop execute?
Correct answer D. When the loop condition becomes false without a break being executed
What is the recommended way to give a function parameter a fresh empty list as its default on every call?
Correct answer D. Use items=None and create the list inside the function when items is None
What does a Python function return if it finishes without executing a return statement?
Correct answer D. None
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In what order does Python search scopes when resolving a name (the LEGB rule)?
Correct answer B. Local, Enclosing, Global, Built-in
What is the purpose of the nonlocal statement in a nested function?
Correct answer B. It lets the inner function rebind a variable in the nearest enclosing function scope
Which limitation applies to a lambda expression in Python?
Correct answer D. Its body must be a single expression
Which exception is raised when a Python function recurses too deeply?
Correct answer A. RecursionError
Why is the block if __name__ == “__main__”: commonly used in a Python module?
Correct answer A. So the code inside runs when the file is executed directly but not when it is imported