In this article, we will explain to you where are operators mapped to magic methods in python. Python Magic methods are special methods that begin and end with double underscores. They are also known as dunder methods. Magic methods are not intended to be invoked directly by you, but rather invocation occurs by the class on a specific action. When you use the + operator to add two numbers, the __add__() method is called internally. Many magic methods in Python are defined by built−in classes. To get the number of magic methods inherited by a class, use the dir() function. ... Read More

Every class in Python, whether built-in or user defined is inherited from object class. The object class has a number of properties whose name is preceded and followed by double underscores (__). Each of these properties is a wrapper around a method of same name. Such methods are called special or magic methods.The magic methods __lt__(), __gt__(), __eq__(), __ne__(), etc. are overridden in a class to overload == and != operators respectively.

1) take a string from the user and check contains atleast one digit or not:Extract character array from string using toCharArray() method. Run a for loop over each character in array and test if it is a digit by static method isDigit() of character classpublic static boolean chkdigit(String str) { char arr[]=str.toCharArray(); for (char ch:arr) { if (Character.isDigit(ch)) { return true; } } return false; }2.) take ... Read More

In this article, we will show you how to find the largest integer less than x in python. The Greatest Integer Function [X] denotes an integral part of the real number x that is the closest and smallest integer to x. It's also called the X-floor. [x]=the largest integer less than or equal to x. Generally If n

Principle used in following solution to this problem is to divide given number with all from 3 its square root, a number's square root is largest possible factor beyond which it is not necessary to check if it is divisible by any other number to decide that it is prime number.The function returns false for all numbers divisible by 2 and less than 2. For others return value of all) function will be false if it is divisible by any number upto its square root and true if it is not divisible by any numberExampledef is_prime(a):     if a ... Read More

The random module in the Python standard library provides a shuffle() function that returns a sequence with its elements randomly placed.>>> import random >>> l1=['aa',22,'ff',15,90,5.55] >>> random.shuffle(l1) >>> l1 [22, 15, 90, 5.55, 'ff', 'aa'] >>> random.shuffle(l1) >>> l1 ['aa', 'ff', 90, 22, 5.55, 15]

In this article, we will show how to randomly select from a range in python. Below are the various methods to accomplish this task − Using random.randrange() function Using random.randint() function Using random.random() function Using random.sample() Using random.randrange() function Algorithm (Steps) Following are the Algorithm/steps to be followed to perform the desired task − Use the import keyword, to import the random module. Use the random.randrange() function(Returns a random number within the specified range) to generate a random number within the given range by passing minimum, and maximum numbers as arguments. Generate a random number from ... Read More

In this article, we will show you how to pick a random number not in a list in python. Below are the various methods to accomplish this task − Using random.choice() function Using random.choice() function and List Comprehension Using random.choice() & set() functions Using random.randrange() function Using random.choice() function The random.choice() method returns a random element from the specified sequence. The sequence could be a string, a range, a list, a tuple, or anything else. Syntax random.choice(sequence) Parameters sequence − any sequence like list, tuple etc. Algorithm (Steps) Following are the Algorithm/steps to be followed to perform ... Read More

In this article, we will show you how to randomly select an item from a string using python. Below are the various methods in python to accomplish this task − Using random.choice() method Using random.randrange() method Using random.randint() method Using random.random() Using random.sample() method Using random.choices() method Assume we have taken a string containing some elements. We will generate a random element from the given input string using different methods as specified above. Method 1: Using random.choice() method Algorithm (Steps) Following are the Algorithm/steps to be followed to perform the desired task − Use the import keyword ... Read More

In this article, we will show you how to randomly select an item from a tuple using python. Below are the various methods in python to accomplish this task: Using random.choice() method Using random.randrange() method Using random.randint() method Using random.random() Using random.sample() method Using random.choices() method Assume we have taken a tuple containing some elements. We will generate a random element from the given input tuple using different methods as specified above. Using random.choice() method Algorithm (Steps) Following are the Algorithm/steps to be followed to perform the desired task – Use the import keyword to ... Read More