Python Quiz SE 27/10/2023

Which statement is used to exit a loop prematurely in Python?

• next

• break

• stop

• end

What is the base class in Python?

• The class that is derived from other classes

• The class with the lowest hierarchy in a class hierarchy

• The class that inherits from multiple classes

• The class that serves as the foundation for other classes

In Python, which function is used to convert a string to lowercase?

• lower()

• LowerCase()

• convertToLower()

• toLower()

Which of the following is not a valid way to open a file in Python?

• file = open('data.txt', 'a')

• file = open('data.txt', 'w')

• file = open('data.txt', 'r')

• file = open('data.txt', 'x')

What is the Big O time complexity of searching for an element in an unsorted list in Python using a for loop?

• O(1)

• O(n)

• O(log n)

• O(n^2)

What is the output of the following Python code?

x = [1, 2, 3]

y = x

y[0] = 4

print(x)

• [1, 2, 3]

• [1, 4, 3]

• [4, 4, 3]

• [4, 2, 3]

What is the output of the following Python code?

x = "Hello, World!"

result = x[::-1]

print(result)

• "Hello, World!"

• "olleH ,!dlroW"

• "!dlroW ,olleH"

• "World!, Hello"

In Python, if a child class defines a method with the same name as a method in the parent class, what is this called?

• Method overloading

• Method masking

• Method overriding

• Method hiding

What is the output of the following Python code?

def my_function(x, y=2):

return x + y

result = my_function(1, 2, 3)

print(result)

• 3

• 4

• 6

• Error

What is the error in the following Python code?

x = 10

y = "5"

result = x + y

• There is no error.

• Name Error: variable 'y' is not defined

• Syntax Error: missing a semicolon

• Type Error: unsupported operand type(s) for +: 'int' and 'str'