# Define A Custom Command

!!! note
    It is not currently possible to define a custom command which may be used with the `tease` command.

## 1) Create A Function

Create a function that does what you want:

```python
# mycommands.py
from scripttease.lib.commands.base import Command

def do_something_impressive(arg1, **kwargs):
    return Command("ls -ls %s" % arg1, **kwargs)
```

!!! important
    kwargs are *always* required.

## 2) Create A Mapping

```python
# mycommands.py
MAPPINGS = {
    'impressive': do_something_impressive,
}
```

`impressive` is now mapped to the function which creates the command.

## 3) Supply The Mapping to the Command Factory

```python
from scripttease.lib.factories import command_factory
from scripttease.lib.loaders import INILoader
from .mycommands import MAPPINGS

ini = INILoader("path/to/commands.ini")
ini.load()

commands = command_factory(ini, mappings=MAPPINGS)

```

## 4) Include the Custom Command

```ini
[this is my custom command]
impressive: testing
```