In programming, comments are the parts of code that Python ignores. The primary purpose of using them is readability. It is good practice to leave comments in your code with descriptions of what a particular part of that code does.

In Python, the comment starts with the hash `#` sign. All the text to the right of the `#` will be ignored. For example, you may have two `print()` functions, but if you place `#` to the left of one of them, then only one text will be outputted.

What symbol is used in Python to comment out?

Python is an interpreted high-level, general-purpose programming language, which means it can be used in different spheres of human activity (unlike HTML, CSS, and JavaScript, which are mainly used in web development). Python can be used in software developing, data science, back-end development, etc. In this mobile-friendly version of the course, you will meet with the main aspects of Python.

In the first section, you will be introduced to the very basics of Python - how to interact with Python, perform simple operations, and output results.

In the past section, you performed different operations with numbers. In this section, you will learn how to save values in computer memory and be able to use them in the future for any purpose.

During the last two sections, you mostly worked with numerical data. In the third section, you will learn how to work with textual data in Python (strings), how to manipulate such data, what methods can be applied to them, and so on.

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