Good! But what if you want to concatenate a string with a numerical value? Like, **Level: 5**. If you try to apply the same approach as in the previous chapter, you will get an error that you can not concatenate `str` and `int` types.

So, how do you avoid this problem? You cannot convert text into a numerical type, but you can do the opposite. To convert a variable into a string type, use the `str()` function, putting the value/variable you want to convert within the parentheses. For instance, let's represent the example above in the code.

# String and numerical values
string = "Level: "
number = 5
# Output result of the concatenations
print(string + str(number))

> Note that we left a blank space to the right of the colon sign within the `string` variable.

The variables `chapter` and `section` represent the current chapter position. You need to output the message using the `print()` function two times in the following format: 
```
Section 3
Chapter 3
```

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.

Introduction to Python | Mobile-Friendly

Converting