Calling gdal2tiles.py

I'm desperately trying to call the **gdal2tiles.py** script from AWS lambda function like this

```
import json
import os
from osgeo import gdal
def lambda_handler(event, context):

os.system("gdal2tiles.py -p -z [0-6] test.jpg")
```

But I get this error message **sh: gdal2tiles.py: command not found**
Any idea what is wrong?
Thanks!

Start with the Lambda handler shown in the report and check whether gdal2tiles.py is installed and available on PATH in the AWS Lambda runtime. Verify the GDAL runtime or packaging setup and confirm that the handler can invoke gdal2tiles.py without the command-not-found error.

Written by the indexing model from the issue text.