sangh priya's blog : December 2022

Html

HTML is the standard markup language for creating Web pages.

What is HTML?

HTML stands for Hyper Text Markup Language

HTML is the standard markup language for creating Web pages

HTML describes the structure of a Web page

HTML consists of a series of elements

HTML elements tell the browser how to display the content

HTML elements label pieces of content such as "this is a heading", "this is a paragraph", "this is a link", etc.

Example Explained

The <!DOCTYPE html> declaration defines that this document is an HTML5 document

The <html> element is the root element of an HTML page

The <head> element contains meta information about the HTML page

The <title> element specifies a title for the HTML page (which is shown in the browser's title bar or in the page's tab)

The <body> element defines the document's body, and is a container for all the visible contents, such as headings, paragraphs, images, hyperlinks, tables, lists, etc.

The <h1> element defines a large heading

The <p> element defines a paragraph

What is an HTML Element?

An HTML element is defined by a start tag, some content, and an end tag:

<tagname> Content goes here... </tagname>

The HTML element is everything from the start tag to the end tag:

<h1>My First Heading</h1>

<p>My first paragraph.</p>

Start tag Element content End tag

<h1> My First Heading </h1>

<p> My first paragraph. </p>

<br> none none

Web Browsers

The purpose of a web browser (Chrome, Edge, Firefox, Safari) is to read HTML documents and display them correctly.

A browser does not display the HTML tags, but uses them to determine how to display the document:

HTML Page Structure

Below is a visualization of an HTML page structure:

HTML History

Since the early days of the World Wide Web, there have been many versions of HTML:

Year Version

1989 Tim Berners-Lee invented www

1991 Tim Berners-Lee invented HTML

1993 Dave Raggett drafted HTML+

1995 HTML Working Group defined HTML 2.0

1997 W3C Recommendation: HTML 3.2

1999 W3C Recommendation: HTML 4.01

2000 W3C Recommendation: XHTML 1.0

2008 WHATWG HTML5 First Public Draft

2012 WHATWG HTML5 Living Standard

2014 W3C Recommendation: HTML5

2016 W3C Candidate Recommendation: HTML 5.1

2017 W3C Recommendation: HTML5.1 2nd Edition

2017 W3C Recommendation: HTML5.2

What is Python?

Python is a popular programming language. It was created by Guido van Rossum, and released in 1991.

It is used for:

web development (server-side),

software development,

mathematics,

system scripting.

What can Python do?

Python can be used on a server to create web applications.

Python can be used alongside software to create workflows.

Python can connect to database systems. It can also read and modify files.

Python can be used to handle big data and perform complex mathematics.

Python can be used for rapid prototyping, or for production-ready software development.

Why Python?

Python works on different platforms (Windows, Mac, Linux, Raspberry Pi, etc).

Python has a simple syntax similar to the English language.

Python has syntax that allows developers to write programs with fewer lines than some other programming languages.

Python runs on an interpreter system, meaning that code can be executed as soon as it is written. This means that prototyping can be very quick.

Python can be treated in a procedural way, an object-oriented way or a functional way.

Good to know

The most recent major version of Python is Python 3, which we shall be using in this tutorial. However, Python 2, although not being updated with anything other than security updates, is still quite popular.

In this tutorial Python will be written in a text editor. It is possible to write Python in an Integrated Development Environment, such as Thonny, Pycharm, Netbeans or Eclipse which are particularly useful when managing larger collections of Python files.

Python Syntax compared to other programming languages

Python was designed for readability, and has some similarities to the English language with influence from mathematics.

Python uses new lines to complete a command, as opposed to other programming languages which often use semicolons or parentheses.

Python relies on indentation, using whitespace, to define scope; such as the scope of loops, functions and classes. Other programming languages often use curly ,brackets for this purpose.

3 wonders

In 2000 a Swiss foundation launched a campaign to determine the New Seven Wonders of the World. Given that the original Seven Wonders list was compiled in the 2nd century BCE—and that only one entrant is still standing (the Pyramids of Giza)—it seemed time for an update. And people around the world apparently agreed, as more than 100 million votes were cast on the Internet or by text messaging. The final results, which were announced in 2007, were met with cheers as well as some jeers—a number of prominent contenders, such as Athens’s Acropolis, failed to make the cut. Do you agree with the new list?

Great might be an understatement. One of the world’s largest building-construction projects, the Great Wall of China is widely thought to be about 5,500 miles (8,850 km) long; a disputed Chinese study, however, claims the length is 13,170 miles (21,200 km). Work began in the 7th century BCE and continued for two millennia. Although called a “wall,” the structure actually features two parallel walls for lengthy stretches. In addition, watchtowers and barracks dot the bulwark. One not-so-great thing about the wall, however, was its effectiveness. Although it was built to prevent invasions and raids, the wall largely failed to provide actual security. Instead, scholars have noted that it served more as “political propaganda.”

Chichén Itzá is a Mayan city on the Yucatán Peninsula in Mexico, which flourished in the 9th and 10th centuries CE. Under the Mayan tribe Itzá—who were strongly influenced by the Toltecs—a number of important monuments and temples were built. Among the most notable is the stepped pyramid El Castillo (“The Castle”), which rises 79 feet (24 meters) above the Main Plaza. A testament to the Mayans’ astronomical abilities, the structure features a total of 365 steps, the number of days in the solar year. During the spring and autumnal equinoxes, the setting sun casts shadows on the pyramid that give the appearance of a serpent slithering down the north stairway; at the base is a stone snake head. Life there was not all work and science, however. Chichén Itzá is home to the largest tlachtli (a type of sporting field) in the Americas. On that field the residents played a ritual ball game popular throughout pre-Columbian Mesoamerica.

Sanghpriya

sangh priya's blog

Monday 19 December 2022

Html

3 wonders

Nmms

Html

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