# Other Functionality¶

`bidict.inverted()`

¶

bidict provides the `inverted`

iterator
to help you get inverse items from various types of objects.

Pass in a mapping to get the inverse mapping:

```
>>> from bidict import inverted
>>> it = inverted({1: 'one'})
>>> {k: v for (k, v) in it}
{'one': 1}
```

…an iterable of pairs to get the pairs’ inverses:

```
>>> list(inverted([(1, 'one'), (2, 'two')]))
[('one', 1), ('two', 2)]
>>> list(inverted((i*i, i) for i in range(2, 5)))
[(2, 4), (3, 9), (4, 16)]
```

…or any object implementing an `__inverted__`

method,
which objects that already know their own inverses (such as bidicts)
can implement themselves:

```
>>> from bidict import bidict, OrderedBidict
>>> dict(inverted(bidict({1: 'one'})))
{'one': 1}
>>> list(inverted(OrderedBidict([(2, 4), (3, 9)])))
[(4, 2), (9, 3)]
```

Perhaps you’d be interested in taking a look at the Addendum next.