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  In the  Introduction to Pandas  post, we learned about Pandas. In today's post we will learn Data Structures in Python Pandas. So, without consuming much time, let's jump to the introduction:- Data Structures in Pandas Python Pandas deals with 2 Data structures:- Series DataFrame Before the latest updates, Python had   3. Panel()   data structure which is used for the 3-D array. But Pandas has removed its   Panel()  and now it only has Series and DataFrame left. These data structures are built with NumPy which means they are fast. Dimension and Description of Data Structure The best way to think of these data structures is that the higher dimensional data structures is a container of its lower-dimensional data structure which means DataFrame is a container for   Series . Building and handling two or more dimensional array is tedious task, burden is placed on the user to consider the orientation of the Data Sets when writing functions. Mutability of the Data Structures 1. Valu

  Doubly Linked List is a variation of Linked list in which navigation is possible in both ways, either forward and backward easily as compared to Single Linked List. Following are the important terms to understand the concept of doubly linked list. Link  − Each link of a linked list can store a data called an element. Next  − Each link of a linked list contains a link to the next link called Next. Prev  − Each link of a linked list contains a link to the previous link called Prev. LinkedList  − A Linked List contains the connection link to the first link called First and to the last link called Last. Doubly Linked List Representation As per the above illustration, following are the important points to be considered. Doubly Linked List contains a link element called first and last. Each link carries a data field(s) and two link fields called next and prev. Each link is linked with its next link using its next link. Each link is linked with its previous link using its previous link. The

  Now that we’ve looked at the basics of HTML ,  HTML Tags  and HTML elements and attributes  it’s time to put this knowledge to use by creating an HTML document In this tutorial, we’ll go through all the steps required to turn a blank text document into a fully functional HTML document that can be viewed in a browser. We’ll look at how to add some of the most commonly used elements to a document, and we’ll try using some attributes for extra customization. By the end of this tutorial, you’ll have your own “HTML Cheat Sheet” document. In the future, if you forget how to add an image to an HTML document or you’re confused about whether you should be using “ordered” or “unordered” lists, you can come back and check your HTML cheat sheet. Step 1 – Create A New Document In Your Text Editor The first thing we’re going to do is open up our text editor and create a new document. For this guide we’ll be using the Brackets text editor, but you can use any text editor you like. Once you’ve creat