Explain the concept of encoding and its role in data processing.

Encoding is a method of representing characters as a sequence of bytes. It is necessary for the correct storage, transmission, and processing of textual information in computers and networks.

For example, when reading a file or receiving data from a network, bytes are converted into characters using a specific encoding (UTF-8, ASCII, Windows-1251, etc.). If the encoding is chosen incorrectly, the text may display improperly.

In Python, when working with text, it is important to specify the correct encoding, for example:

text = b'\xd0\xbf\xd1\x80\xd0\xb8\xd0\xb2\xd0\xb5\xd1\x82'.decode('utf-8')  # 'привет'