amazon web services - How to put array as environment variable in boto3 Lambda Function

Question

Is there is a way to put an array as an Environment Variable in a lambda Function using Python Runtime.

Answer 1

Environment variables are strings. There are some ways of representing a list (or array) in a string, most commonly - a comma separated list item,item2,item3 which you can process in python code as follows:

import os

env_variable = os.getenv("NAME_LIST")
name_list = [item for item in env_variable.split(",") if item]

I've opted to use conditional list comprehension instead of just using str.split because sometimes (depending on how the string is formed) there will be empty strings in the result where you don't expect them to be. Feel free to omit this part.