2023 Code Unnati Python Practice Assessment - Lists, Sets

In Python programming, a Set is used to store a collection of unique items. Sets are unordered and don't allow duplicate elements.

The set() function in Python is used to create an empty set. It's similar to using curly braces {}, but the empty curly braces {} are used to create an empty dictionary.

Sets are immutable data structures. You can't change the elements within a set directly. You can only add or remove elements from a set.

The given code snippet is incorrect because test() function is called without providing the required argument a. It creates an error as test() cannot be defined without the argument a being passed in.

The list() function in Python takes an iterable like a list, tuple, or range and creates a list object from it.

In this code, the class test defines a constructor __init__ which sets an attribute a with a default value 'Hello World'. When the object obj is created, it inherits this attribute from the constructor. The display method prints the value of a, resulting in the display of 'Hello World'.

Object creation in Python involves two main methods: __new__ and __init__. The __new__ method allocates memory for the object and returns it. The __init__ method is used to initialize or set the initial state of the object. Both of these methods are important for creating objects and setting their initial values.

In Python, the built-in type() function returns the type or class of a given value or object. It helps you determine the data type or class to which an object belongs.

The elif keyword in Python is used for creating conditional statements that are checked only if the preceding if or elif conditions are false. It provides an alternative condition for execution when the initial if condition is not met.

When a class inherits attributes and methods from more than one parent class, it is called multiple inheritance. In the provided code, class C inherits from class A and class B, demonstrating multiple inheritance.

The logical expression 1+3 == 7 evaluates to False, therefore the else block gets executed, leading to the output Know Program.