Mastering Python Concepts

What will be the output of the following code snippet?

• 45

• 20

• 54

• 4,5

Which of the following is an invalid identifier in Python?

• my_variable

• 2ndVariable

• variable_name

• variable-2

What will be the output of the expression 3 * 1 ** 3?

• 3

• 0

• 1

• 9

Which control structure is used to execute a block of code multiple times?

• Function

• Variable

• Loop

• Condition

What is the purpose of the 'return' statement in a function?

• The purpose of the 'return' statement is to provide a value from a function to its caller.

• To end the function execution immediately.

• To create a loop within the function.

• To define the function's parameters.

How do you import a module named 'math' in Python?

• load math module

• import mathlib

• require math

• import math

What is the main benefit of using classes in Python?

• Classes make Python code slower and less efficient.

• Classes are not necessary for small scripts.

• The main benefit of using classes in Python is code reusability and organization through encapsulation.

• Classes are only used for data storage.

Which of the following is not a mutable data type in Python?

• list

• tuple

• set

• dictionary

What is the output of the following code: print([1, 2, 3] + [4, 5])?

• [1, 2, 3, 4, 5]

• [1, 2, 3, 4]

• [1, 2, 3, 4, 5, 6]

• [1, 2, 3, 5]

What is the difference between a list and a tuple in Python?

• Lists can contain only numbers, while tuples can contain any data type.

• The main difference is that lists are mutable and tuples are immutable.

• Tuples are created using square brackets, while lists use parentheses.

• Lists are faster than tuples in all operations.