# Python - Range (sequence of integer)

A range represents a sequence of integer, it is not a list or a set.

To get a list of a set from a range, you have to use the constructor: list() or set().

```>>> list(range(2))
[0, 1]```

## 3 - Snippet

For any integer n, range(n) represents the sequence of integers from 0 through n - 1.

```for x in range(5):
print x```
```0
1
2
3
4```

## 4 - Syntax

A range can take 1, 2 or 3 arguments.

You can form a range with one, two, or three arguments.

• The expression range(a,b) represents the sequence of integers a, a + 1, a + 2, … , b - 1.
• The expression range(a,b,c) represents a, a + c, a + 2c, … (stopping just before b).

### 4.1 - 1 argument

Range starts the range at zero and increments by 1 until the size reaches 1 less than the range.

For instance:

`print range(1) `
``
`print range(2) `
`[0,1]`

### 4.2 - 2 arguments

Range starts the range at the first argument and increments by 1 until the size reaches 1 less than the second argument:

`range(1,3)`
`[1,2]`
`print range(2,5)`
`[2, 3, 4]`

### 4.3 - 3 arguments

`range(Start,End,Increment)`

where:

• Start is the number the list starts at,
• End is the number minus 1 where the list ends,
• Increment is how much you should increment by (default increment of 1)

For instance:

`print range(4,13,2)`
`[4, 6, 8, 10, 12]`