In this tutorial, we will learn about the internal working of the list in Python 3.x. Or earlier. We will also look at the object and frame formation when we write a python statement at each step.Initializing the list: This means that we are creating a list with some elements.>>> lis=[1, 2, 3, 4]Here list variable is declared in the global frame which is referring to a list object as shown aboveNow let’s see what happened when we append the element in the list.>>> lis.append(8)Here the element is added at the end and the size of the list is increased ... Read More

In this article, we will learn about defining and user-defined functions to predict the next greatest element.Problem statementWe are given an array & we need to print the Next Greater Element for every element present in the array. The Next greater Element for an arbitrary element y is the first greatest element present on the right side of x in array. Elements for which no greatest element exist, return -1 as output.4Input test case[12, 1, 2, 3]Output12 -> -1 1 -> 3 2 -> 3 3 -> -1Now let’s observe the source code.Example# Function Def elevalue(arr):    # Iteration   ... Read More

In this article, we will learn the implementation and usage of issubset() function available in the Python Standard Library.The issubset() method returns boolean True when all elements of a set are present in another set (passed as an argument) otherwise, it returns boolean False.In the figure given below B is a subset of A. In case A & B are identical sets mean that A is a proper subset of B. This means both sets contain the same elements in them.Syntax.issubset()Return valueboolean True/FalseNow let’s look at an illustration to understand the concept.Example Live DemoA = {'t', 'u', 't', 'o', 'r', 'i', ... Read More

In this article, we will learn about Input/Output from an external files in C/C++, Java, and Python for Competitive Programming.Python I/O from the fileIn python, the sys module is used to take input from a file and write output to the file. Let’s look at the implementation in the form of code.Exampleimport sys # For getting input sys.stdin = open('sample.txt', 'r') # Printing the Output sys.stdout = open('sample.txt', 'w')Java I/O from the fileHere we take the help of buffered reader method to take input associated with file reader to read input from file and print writer to print the data ... Read More

In this article, we will learn about different IDE’s available on Python for windows.PycharmInteractive python consoleSupport for web frameworksFaster refracting timeLesser developmentJupyter notebookCompatibility with almost every python moduleLesser space and hardware requirementsInbuilt terminal and kernel featuresA wide variety of widgets can be appliedWing ideInbuilt debugging toolsSupport for unit testingEasy code navigation capability.Komodo ideThird-party library supportXML autocompletionInbuilt refracting capacity.Sublime textCross-platformMultitaskingBetter customizationAtomBetter customizationBetter user interfaceCross-platform editorConclusionIn this article, we learned about IDE for Python programming on windows.

In this article, we will learn about issuperset() in Python and its implementation in various areas.This method returns boolean True if all elements of a set B contains all elements set A which is passed as an argument and returns false if all elements of A not present in B.This means if B is a superset of A then itreturns true; else FalseExampleLet’s look at some example Live DemoA = {'t', 'u', 't', 'o', 'r', 'i', 'a', 'l'} B = {'t', 'u', 't'} print("A issuperset B : ", A.issuperset(B)) print("B issuperset A : ", B.issuperset(A))OutputA issuperset B : True B issuperset ... Read More

In this article, we will learn about some Interesting facts about strings in Python 3.x. Or earlier.ImmutabilityAuto-detection of escape sequencesDirect slicingIndexed accessImmutabilityThis means that there is no permission of modification on type and we only have read only access to the strings.Exampleinp = 'Tutorials point' # output print(inp) # assigning a new value to a particular index in a string inp[0] = 't' print(inp) # raises an errorOutputTypeError: 'str' object does not support item assignmentAuto-detection of escape sequencesThe strings containing backslash are automatically detected as an escape sequence.Exampleinp = 'Tutorials point' # output print(inp+””+”101”)OutputTutorials point 101Direct slicingWe all are aware ... Read More

In this article, we will about the implement isNumber() method using Python 3.x. Or earlier.This method takes in a string type as input and returns boolean True or False according to whether the entered string is a number or not. To do this we take the help of exception handling by using try and except statement.ExampleLet’s look at some example − Live Demo# Implementation of isNumber() function def isNumber(s):    if(s[0] =='-'):       s=s[1:]    #exception handling    try:       n = int(s)       return True    # catch exception if any error is encountered ... Read More

In this article, we will learn about what all features makes python cool and different from other languages.>>>import thisOutputThe Zen of Python, by Tim Peters Beautiful is better than ugly. Explicit is better than implicit. Simple is better than complex. Complex is better than complicated. The flat is better than nested. Sparse is better than dense. Readability counts. Special cases aren't special enough to break the rules. Although practicality beats purity. Errors should never pass silently. Unless explicitly silenced. In the face of ambiguity, refuse the temptation to guess. There should be one-- and preferably only one --obvious way to ... Read More

In this article, we will learn about how the input function behaves in an undesirable manner in version 2.x. Or earlier. In version 2.x. the raw_input() function works as replacement of the input() function . In newer versions 3.x. or later all the desirable features & functionalities of both functions are merged into the input() function.Firstly let’s look at the input type of built-in functions for taking input in Python 2.x.Example# Input Given : String str1 = raw_input("Output of raw_input() function: ") print type(str1) str2 = input("Output of input() function: ") print type(str2) # Input Given : Float str3 = ... Read More