Hackerrank Python Data Structures & Algorithms 2

Question 1

What is the purpose of the `__init__` method in a Python class?

Accepted Answer

To initialize the attributes of a new object when it is created

Answer

To destroy an object when it is no longer needed

Answer

To define the string representation of an object

Answer

To compare two objects for equality

Question 2

What does the `lambda` keyword create in Python?

Accepted Answer

An anonymous (unnamed) function defined in a single expression

Answer

A new class definition

Answer

A global variable

Answer

A loop that runs indefinitely

Question 3

What is the output of: print(type({}))?

Accepted Answer

Answer

Answer

Answer

Question 4

Which method would you use to remove and return the last element from a Python list?

Accepted Answer

pop()

Answer

remove()

Answer

del

Answer

discard()

Question 5

What is a Python generator and how does it differ from a regular function?

Accepted Answer

A function that uses yield to produce a sequence of values lazily, one at a time

Answer

A function that generates random numbers

Answer

A class that creates new objects

Answer

A built-in function for creating lists

Question 6

What does the `*args` parameter allow in a Python function definition?

Accepted Answer

Accepting a variable number of positional arguments as a tuple

Answer

Accepting only keyword arguments

Answer

Limiting the function to exactly one argument

Answer

Creating a list of return values