# Python Reducers

If any additional arguments was passed, **fx** converts it to a function which
takes the JSON as an argument named `x`.

```sh
export FX_LANG=python
```
Or
```sh
export FX_LANG=python3
```

Example:

```sh
fx data.json '[x["age"] + i for i in range(10)]'
```

## Dot

Fx supports simple syntax for accessing data, which can be used with any `FX_LANG`.

```sh
$ echo '{"foo": [{"bar": "value"}]}' | fx .foo[0].bar
value
```