Daniel Arbuckle's Mastering Python

Indentation

Most other programming languages have explicit symbols that indicate the beginning of a block and the end of a block. However, it's a common practice in all of those languages to indent blocks so that humans find the code easier to read. In fact, failure to do so is often taken as a sign that a programmer is an amateur. This means that the block structure in most languages is actually represented in two different ways: the symbols and the indentation. By incorporating indentation into syntax without the need for explicit symbols, Python both removes this duplication and ensures that the code is readable.

With that, we've come to the end of this section. In the next section, we'll look at some of Python's built-in data structures ...