Can't run binary from within python aws lambda function

Question

I am trying to run this tool within a lambda function: https://github.com/nicolas-f/7DTD-leaflet

The tool depends on Pillow which depends on imaging libraries not av

Answer 1

Like the docs mention for Node.js, you need to update the $PATH, else you'll get command not found when trying to run the executables you added at the root of your Lambda package. In Node.js, that's:

process.env['PATH'] = process.env['PATH'] + ':' + process.env['LAMBDA_TASK_ROOT']

Now, the same thing in Python:

import os

# Make the path stored in $LAMBDA_TASK_ROOT available to $PATH, so that we
# can run the executables we added at the root of our package.
os.environ["PATH"] += os.pathsep + os.environ['LAMBDA_TASK_ROOT']

Tested OK with Python 3.8.

(As a bonus, here are some more env variables used by Lambda.)