Python Articles - Page 964 of 1048

In this article, we will show you how to zip a python dictionary and list together. Below are the various methods to accomplish this task − Using zip() function Using append() function and items() function Using append() function and in operator. Combing dictionary and list together using zip() Algorithm (Steps) Following are the Algorithm/steps to be followed to perform the desired task − Create a variable to store the input dictionary. Create another variable to store the input list. Use the zip() function(The zip() function can be used to combine two lists/iterators) to combine the input ... Read More

In Python, a dictionary doesn't allow duplicate keys or repeated keys. So, we can use defaultdict from the Collections module. As it can store multiple values for the same key in the form of lists or any other data structures. 'defaultdict' from 'collections' Module The subclass of the built-in dict class that allows us to provide a default value for a key that doesn't exist is known as defaultdict. A function that returns the default value for new keys is known as 'default factory', and if you want to pass this default factory, we can use a list which allows storing ... Read More

If sum of cubes of individual digits in a number add up to the number itself, it is called armstrong number. for example 153=1**3+5**3+3**3ExampleFollowing Python program find armstrong numbers between 100 to 1000for num in range(100,1000):   temp=num   sum=0   while temp>0:       digit=temp%10       sum=sum+digit**3       temp=temp//10       if sum==num:            print (num)OutputThe output is as follows −153 370 371 407

We can write a recursive function in Python to find the factorial of a number. Recursion means that a function calls itself repeatedly to work through different stages of the same task. This technique is useful for tasks that follow a repetitive pattern or have a step-by-step structure, like calculating factorials, generating the Fibonacci series, or navigating tree structures (tree traversal). The factorial of a number is the product of all positive integers from 1 to that number. It is represented using the symbol n! and defined as - n! = n X (n - 1) X (n - 2) ... Read More

Python's built-in library function max() returns the largest number in an iterable or commaa separated list of numbers.>>> max(10,23,43,21) 43 >>> l1=[4,7,2,9,1] >>> max(l1) 9

In this article, we will show you how to do python math at the command line. Python is an interpreter-based language. When you invoke the Python interpreter, (>>>) Python prompt appears. Any Python statement can be entered in front of it. As soon as you press ENTER, the statement is executed. Hence a mathematical expression using operators defined in Python will be evaluated at the command line. What are Operators? A symbol or function that represents an operation is called an operator. For instance, in mathematics, the addition operator is represented by the plus sign (+). While some of ... Read More

Python's built-in function sum() returns sum of numbers in an iterable object such as list or tuple. It takes two arguments, initial value which is optional and 0 by default and iterable objectExample>>> l1=[10,20,30,40,50] >>> ttl=sum(l1) >>> ttl 150 >>> ttl=sum(range(10)) >>> ttl 45

Python's core library has two built-in functions max() and min() respectively to find maximum and minimum number from a sequence of numbers in the form of list or tuple object.example>>> max(23,21,45,43) 45 >>> l1=[20,50,40,30] >>> max(l1) 50 >>> t1=(30,50,20,40) >>> max(t1) 50 >>> min(l1) 20 >>> min(t1) 20 >>> min(23,21,45,43) 21

The absolute value of a number is its non-negative representation. It specifies the distance of that number from zero on a number line, irrespective of its direction.For example, the absolute value of -2 is 2, and 2 is simply 2. In this article, we will explore how to calculate the absolute value of a number in Python. Calculating Absolute Value in Python The following methods can be efficiently used to calculate the absolute value of a number. Using User-Defined Function (Brute Method) Using abs() function ... Read More

In this article, we will explain the immutable datatypes in Python. Python considers everything to be an object. A unique id is assigned to it when we instantiate an object. We cannot modify the type of object, but we may change its value. For example, if we set variable a to be a list, we can't change it to a tuple/dictionary, but we may modify the entries in that list. In Python, there are two kinds of objects. On the one hand, there are objects that can change their internal state (the data/content inside the objects), i.e. they can be ... Read More