# install preprocessor

The `install preprocessor` command installs either a datasink Java preprocessor file, a preprocessor options file, or a prediction Python custom preprocessor file. The preprocessor file must reside in the ipynb notebook folder, or you must specify the full relative path of the file in the command.

## Syntax

```
install preprocessor <file name>
```

## Parameters

| Parameter     | Description                                                                                                                                                                                                                                                                                                  |
| ------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `<file name>` | <p>Preprocessor file name with the following extension::<br>- <code>.jar</code> – datasink Java preprocessor class<br>- <code>.csv</code> – datasink preprocessor options file<br>- <code>.json</code> – datasink preprocessor options file<br>- <code>.py</code> – prediction Python preprocessor class</p> |

## Example

```
[ ]: install preprocessor custom_preprocessor_file.py
     Preprocessor file(s) custom_preprocessor_file.py installed successfully

[ ]:
```