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What is Pronic number? In mathematical terms, a Pronic number is a number that can be defined as the product of two consecutive integers. The Pronic number is in the form of n(n+1), where n is the integer. For example, the pronic numbers are 0, 2, 6, 12, 20, and so on. It is also known asa heteromecic number, oblong number, or rectangular number. Input & Output Scenarios Following are the scenarios that show the mathematical calculation for checking of the pronic number: Scenario 1 Suppose we have a number 12: Input: 12 Output: 4 x 3 = ... Read More
In mathematical terms, three points are said to be collinear if all three points lie on a straight line. If the points do not lie on the same straight line, then they are not considered collinear points. Those three points represent coordinates on a plane: (x1, y1), (x2, y2), and (x3, y3). They must lie on the same straight line to be considered collinear. Where, x1, y1, x2, y2, x3, y3 are the points on x and y axis and (x1, y1), (x2, y2), (x3, y3) are the coordinates.Determining Colinearity Mathematically, there are two ways to know whether the three points ... Read More
In Python, a class is a collection of objects. It is the blueprint from which objects are being created. It is a logical entity that contains some attributes and methods. Following is an example of a Python class - class Tutorialspoint: print("Welcome to Tutorialspoint.") obj1 = Tutorialspoint() When are Python classes Garbage collected? In Python, the objects are eligible for garbage collection when the reference count of the object is zero. Similarly, the classes are garbage collected when no instances of the class have been created and it is no ... Read More
A List in Python is a mutable sequence of elements separated by commas ", ". It is represented by square braces "[ ]".An empty list contains no elements, meaning its length is 0. It is indicated by the square braces with no elements in it.In this article, we will explore various methods to check whether a given list in Python is empty.Checking for an Empty List using Not Operator In Python, the not operator is one of the logical operators. If the given condition is True, it will return False and vice versa. This operator evaluates the empty list as False. The 'not' ... Read More
The garbage collector doesn't track (and collect) all the objects; it can only track objects that are unreachable (have a reference count of zero), and the objects that are involved in circular references. What is a garbage collector? The garbage collector is an automatic (implicit) process that handles memory allocation and deallocation, ensuring efficient use of memory. We can interact with the garbage collector in Python explicitly and modify its behavior, using the gc module; it is a built-in module in Python for garbage collection. By default, it is turned ON; you may turn it off if you are sure ... Read More
By using the dict() method in Python, we can create a dictionary with the list comprehension. Following is the syntax of dict() method- dict(**kwarg) Keyword arguments. We can pass one or more keyword arguments. If no keyword argument is passed, then the dict() method will create an empty dictionary object. The syntax for creating a dictionary with list comprehension: dict(list_comprehension) Creating Dictionary using List Comprehension Instead of sending a number of keywords here, we need to send a list of tuples with key-value pairs to the dict() method. Let’s take an example and create a dictionary using a ... Read More
Tuple is one of the data structures of the Python programming language. It is used to store multiple values separated by commas in an ordered manner. It is immutable in the sense that once the tuple is created cannot perform any operations like deleting, appending, etc. The elements in the tuple can be int, float, string, or binary data types, and it allows duplicates of the elements. It uses indexing for accessing the elements. It allows a single element to be in a tuple. There are different ways to create the empty tuple. Let’s see each way in detail. ... Read More
Encapsulation is one of the fundamental concepts in object-oriented programming (OOP). It describes the idea of wrapping data and the methods that work on data within one unit. This restricts accessing variables and methods directly and can prevent the accidental modification of data. To prevent accidental change, an object’s variable can only be changed by the object’s method. Those types of variables are known as private variables. In Python, getters and setters are methods used to access and modify private attributes of a class. These methods are ... Read More
JSON can be abbreviated as JavaScript Object Notation. It means a script of a text file in a programming language to transfer and store the data. It is supported by the Python programming language using a built-in package named JSON. Its text is given in the quoted string format, which contains a key and value within the curly braces{}, which looks like a dictionary. To access a JSON document using Python, we have to use the JSON package. In this package, we have a method named dumps(), which is used to convert the Python tuple objects into the Java objects. ... Read More
Double Quotes in PythonDouble quotes are used to represent a string or a character. The functionality of the single quotes and double quotes is the same. We can use any type of quote as per our requirement. The following is the syntax to create a string using double quotes in the Python programming language. str = “text” Example Let’s see an example to understand the functionality and usage of the double quotes in Python. Initially, we have created a string by passing the sentence in double quotes and assigned it to the variable str. Next we printed ... Read More