TIU Quiz-9

What will be the output of the following code?

• 10

• 5

• lambda x: x * 2

• Error

Which of the following is a correct implementation of list comprehension to create a list of squares of numbers from 1 to 5?

• [x ** 2 for x in range(1, 6)]

• {x ** 2 for x in range(1, 6)}

• {x: x ** 2 for x in range(1, 6)}

• [x ** 2 in range(1, 6)]

Which of the following is the correct way to sort a list of tuples based on the second element of each tuple in descending order?

• sorted(tuples, key=lambda x: x[1], reverse=True)

• sorted(tuples, key=lambda x: x[0], reverse=True)

• sorted(tuples, key=lambda x: x[1], reverse=False)

• sorted(tuples, key=lambda x: x[0], reverse=False)

What is the output of the following code snippet?

• 2024 5 16

• 16 5 2024

• 5 16 2024

• Compile Time Error

How can you convert a datetime object into a formatted string representation of the date and time?

• str(date_obj)

• date_obj.strftime("%Y-%m-%d %H:%M:%S")

• date_obj.format("%Y-%m-%d %H:%M:%S")

• format(date_obj, "%Y-%m-%d %H:%M:%S")

What does the map() function in Python do?

• Applies a function to each element of an iterable

• Creates a map object from an iterable

• Merges two iterables into one

• Sorts elements of an iterable

What will be the output of the following code?

• [25, 10, 8]

• [25, 10, 8, 15]

• [30, 10, 8]

• Error

Given a list numbers = [1, 2, 3, 4, 5], what does [x for x in numbers if x % 2 == 0] return?

• [1, 3, 5]

• [2, 4]

• [1, 2, 3, 4, 5]

• [4, 2]

Which of the following is NOT a valid way to define an anonymous (lambda) function in Python?

• lambda x: x * 2

• def(x): return x * 2

• lambda x, y: x + y

• lambda : "hello"

What is the result of sum([x for x in range(10) if x % 2 == 0])?

• 20

• 25

• 30

• None of These