# NumPy arange

# NumPy arange#

`arange`

in NumPy is very like the Python
`range`

callable with two important differences:

`arange`

returns an array rather than a`range`

instance;`arange`

arguments can be floating point values.

```
import numpy as np
```

```
np.arange(4, 11, 2)
```

```
array([ 4, 6, 8, 10])
```

```
np.arange(4, 11, 0.5)
```

```
array([ 4. , 4.5, 5. , 5.5, 6. , 6.5, 7. , 7.5, 8. , 8.5, 9. ,
9.5, 10. , 10.5])
```

Because `arange`

returns arrays, you can use NumPy element-wise operations
to multiply by the step size and add a start value. This is one way to create
equally spaced vectors
(`np.linspace`

is another):

```
np.arange(10) * 0.5 + 4
```

```
array([4. , 4.5, 5. , 5.5, 6. , 6.5, 7. , 7.5, 8. , 8.5])
```