Python

What is the purpose of the 'lambda' function in Python?

• To create anonymous functions

• To create named functions

• To create classes

• To create modules

Answer explanation

A lambda function is a small anonymous function.

A lambda function can take any number of arguments but can only have one expression.

What does the 'with' statement in Python ensure?

• Proper indentation

• Proper error handling

• Proper resource management and file closure

• Proper variable assignment

Which of the following is a correct way to create a multiline string in Python?

• string = """Line 1 \n Line 2"""

• string = 'Line 1 \n Line 2'

• string = 'Line 1 + Line 2'

• string = 'Line 1 \ Line 2'

Answer explanation

A sequence of characters is called a string. To define multi-line strings, we can use backlash, brackets, and triple quotes.

What is the output of this code?

• 15

• 100000

• 50

• 100

In Python, what is the purpose of a 'docstring'?

• To include a document file in the code

• To provide documentation within a function or module

• To declare a variable that stores text data

• To encrypt code for security

Answer explanation

Python documentation strings (docstrings) are an easy way to link documentation to Python modules, functions, classes, and methods. It is defined in source code and is used to document a specific portion of code in the same way that comments are. Unlike traditional source code comments, the docstring should describe what the function does rather than how it works.

What is the purpose of the 'pass' statement in Python?

• To terminate a loop

• To raise an exception

• To skip a conditional block

• To create an empty function or class

Answer explanation

The pass statement in Python is used as a placeholder where syntactically some code is required, but you don't want any action to be taken. It's often used in situations like defining empty functions or classes that you plan to fill in later.

What is the output of this code?

• 1

  2

  3

  4

  5

• 1 3 5

• 1

  3

  5

• 1

  2

  4

  5

In Python, what does the 'zip( )' function do?

• Combines two dictionaries

• Iterates over two or more lists simultaneously

• Compresses a file

• Returns the quotient and remainder of division

Answer explanation

The zip() function in Python creates an iterator that aggregates elements from two or more iterables and returns a series of tuples.

 What will be printed when this code is executed?

• 8

• 15

• 3

• 5

  5

  5

What is a decorator in Python?

• A design pattern for user interfaces

• A module for data visualization

• A function that modifies the behavior of another function

• A graphical element in a GUI application

Answer explanation

In Python, decorators are a powerful feature that allows you to dynamically modify the behavior of a function or a class method at runtime without changing its source code.