A string it is a sequence of characters, which can contain both numbers and letters. But, let's highlight, that this sequence of characters must be enclosed in quotation marks (either single or double).

Example of creating a string using single quotes:


```
Input:
string = 'Python'
print('One of the most popular programming language is:', string)

Output:
One of the most popular programming language is: Python
```


Example of creating a string using double quotes:


```
Input:
string = "Python"
print('One of the most popular programming language is:', string)

Output:
One of the most popular programming language is: Python
```


It is important to know how to create multi-line strings. In these situations single and double quotes do not work. Here we need to use three quotes. Let's look at what this looks like in practice.


```
Input:
string = '''Roses are red 
Violets are blue 
Cats can learn Python
What about you?'''
print(string)

Output:
Roses are red
Violets are blue
Cats can learn Python
What about you?
```


Python 3.6 has a way to format strings that allows us to use built-in expressions inside string constants. This approach is called `f-strings`

Let's look at the examples.


```
Input:
string = 'world'
print(f'Hello, {string}')

Output:
Hello, world
```



```
Input:
a = 5
b = 13
print(f'{a} + {b} = {a+b}')

Output:
5 + 13 = 18
```


A data type is a classification of data. Python, like most programming languages, supports such basic types of data as strings, numeric, and logical types.
 For programmers, one of the most important basic skills is a deep understanding of data types and data structures.
So, let's get to know Python datatypes!

In this section, we will learn basic things about the numerical type of data, what they are, how to create them and what we can do with them.

In this section we will learn about another type of data, namely Boolean, as well as how it is characterized and what to do with it.

In this section we will learn a lot about strings, as well as methods of working with them. Learn what string slicing is and practice working with it.

What is a String?

解答