PYTHON Viva-Voce Questions

Which of the following best describes the difference between a list and an array in Python?

• Lists can store elements of different data types, while arrays require all elements to be of the same data type.

• Lists are immutable, while arrays are mutable.

• Arrays can store elements of different data types, while lists require all elements to be of the same data type.

• Lists are used only for mathematical operations, while arrays are used for general data storage.

Functions are used because:

• They help organize code and make it reusable.

• They make the code run slower.

• They increase the complexity of the code unnecessarily.

• They are required for every program to run.

Which of the following methods can be used to add, remove, and modify elements in a list in Python?

• append(), remove(), and indexing assignment

• print(), input(), and len()

• sort(), reverse(), and max()

• open(), close(), and read()

A set in Python is different from a list because:

• A set is an unordered collection of unique elements, while a list is an ordered collection that can have duplicates.

• A set is an ordered collection that allows duplicates, while a list is unordered and only allows unique elements.

• A set and a list are both ordered collections that allow duplicates.

• A set is a mutable collection, while a list is immutable.

The difference between union(), intersection(), and difference() methods in sets is:

• union() returns all unique elements from both sets, intersection() returns only common elements, and difference() returns elements present in the first set but not in the second.

• union() returns only common elements, intersection() returns all unique elements, and difference() returns elements present in both sets.

• union() returns elements present in the first set but not in the second, intersection() returns all unique elements, and difference() returns only common elements.

• union() returns duplicate elements, intersection() returns all elements, and difference() returns only unique elements.

A tuple is different from a list in which of the following ways?

• A tuple is immutable, while a list is mutable.

• A tuple can only store numbers, while a list can store any data type.

• A tuple is always longer than a list.

• A tuple is used only for mathematical operations, while a list is used for general purposes.

Which of the following statements correctly differentiates between mutable and immutable sequence datatypes in Python?

• Mutable sequences can be changed after creation, while immutable sequences cannot be changed after creation.

• Immutable sequences can be changed after creation, while mutable sequences cannot be changed after creation.

• Both mutable and immutable sequences can be changed after creation.

• Neither mutable nor immutable sequences can be changed after creation.

How can you create a tuple with a single element? Select the correct example.

• (5,)

• (5)

• [5,]

• {5,}

A parameter is a variable in a function definition, while an argument is the value passed to the function when it is called.

• A parameter is a variable in a function definition, while an argument is the value passed to the function when it is called.

• A parameter is the value passed to the function, while an argument is a variable in a function definition.

• Parameters and arguments are always the same thing in programming.

• A parameter is used only in loops, while an argument is used only in functions.

A dictionary in Python is a data structure that stores data as:

• Key-value pairs

• A list of values

• A sequence of characters

• A set of unique elements