Rivalry2

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1 added 0 removed

Original 2026-01-01

Modified 2026-02-21

1 "Hello, World!" is the traditional way to begin learning a new programming language. It is a simple program that displays a greeting on the screen and introduces the new language by showing its syntax and program structure.

2 We're not breaking this tradition since it is over forty years old. In the first lesson, we'll write a program called Hello, World!. To do this, you need to give the computer a special command. That is print() in Python:

3 We used a comment to explain more about what value is displayed.

4 + <h2>How comments work</h2>

4 Almost all programming languages allow you to leave comments on your code. The interpreter ignores them. They're only for people; they let the programmer make notes for themselves and other programmers.

5 Almost all programming languages allow you to leave comments on your code. The interpreter ignores them. They're only for people; they let the programmer make notes for themselves and other programmers.

5 They allow you to add explanations of how the code works, what errors need to be corrected, or what you need to remember to add later:

6 They allow you to add explanations of how the code works, what errors need to be corrected, or what you need to remember to add later:

6 In Python, comments begin with the # sign and can appear anywhere in the program. They can take up an entire line. If one line isn't enough, you can create several comments:

7 In Python, comments begin with the # sign and can appear anywhere in the program. They can take up an entire line. If one line isn't enough, you can create several comments:

7 The comment can be on the line after the code:

8 The comment can be on the line after the code: