File handling means interacting with files that are stored on your computer. These interactions could be reading and writing data to those files. Moreover, file handling is a crucial part of any web application. In this tutorial, we will cover file handling in Python. In Python , open() function is the basic function for working
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Python does not have built-in support for arrays like other programming languages like C, C++ etc. But it has many data types like lists that can be used as arrays. Except for one thing, in a typical array, all elements should be of the same type, but in lists, this is not mandatory. What is
A lambda function in Python is an anonymous function that can take any number of arguments but can return only one expression. A lambda function is defined by using the ‘lambda’ keyword. Syntax lambda arguments: expression In the syntax: arguments are any value passed expression is the returned value Example: addition = lambda x,
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A function is a block of code that can be written once and used as many times as one wants. Once defined, a function can be used by calling it wherever and whenever required. What is the need for functions? Imagine you need to write a chunk of code to get 10 latest blog posts from
According to Google – “In computer programming, a loop is a sequence of instructions that is continuously repeated until a certain condition is reached.” Now try to understand this. Why Loops are so important? Imagine this: You are asked to print “Hello World” 4 times in Python. You might write: print("Hello World") print("Hello World") print("Hello
In Python, a dictionary is a collection type that is used to store data in the form of key-value pairs. A dictionary is ordered, changeable, and does not allow duplicate values. The factor that makes a dictionary different from lists, tuples or sets is that in a dictionary each value has an associated key. Note:
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Just like the lists or tuples, a set in python is also one of the collection types. A set is unordered, unindexed, and unchangeable. It is written using curly braces. Example of a set: cities = {'Delhi', 'Mumbai', 'Hyderabad', 'Bhopal'} print(cities) Output: {‘Delhi’, ‘Mumbai’, ‘Hyderabad’, ‘Bhopal’} Set items are unordered It means that the items
Like lists, tuples are also used to store multiple values in a single variable. It is a collection that is ordered and unchangeable. Unlike lists, Tuples are written with round brackets. Example sample_tuple = ("east", "west", "north", "south") print(sample_tuple) Output: (“east”, “west”, “north”, “south”) Tuples are ordered Tuples are ordered, this means that the items
In JavaScript, const is a keyword that is used to declare a variable whose value cannot be changed for the whole script. For example const hobby = 'Painting'; hobby = 'Dancing'; // This cannot be done. The above code will through an error like this – TypeError: Assignment to constant variable. Some points to be
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A list in Python is a datatype that is used to store multiple values. A list can be formed by assigning different values inside square brackets and separated by commas. Example mylist = ["India", "France", "Australia", "Nepal"] print(mylist) Output: [“India”, “France”, “Australia”, “Nepal”] Items in list are ordered, indexed, and changeable. Indexing of list The
