How run Python script that it is in S3 using lambda

Question

I want to run a python code that I have in my S3 bucket using AWS lambda

I tried with os library, but it have not worked out

My code is:

from __future__ import print_function
import os

def lambda_handler(event, context):
    os.system('python https://s3.us-east-2.amazonaws.com/BUCKET/CODE.py')

I get the message "No such file or directory"

I am using lambda because the code in python must be triggered when some event happends

How can I run my code?

Why do you have Python code that is trying to call Python code? Can't you incorporate the code into your actual AWS Lambda function? — John Rotenstein
– John Rotenstein, Commented Apr 1, 2019 at 20:41

Thales Minussi · Accepted Answer · 2019-04-01 13:40:56Z

1

What do you think it is going to happen if you run python http://google.com.py on your machine?

It's going to try to run a file called http://google.com.py on the current working directory.

It's impossible for both os.system and python to determine whether the argument is an URL, and, if it is, download and execute its contents.

You will have to get your S3 file using boto3, write its contents inside /tmp (this is the only writable directory inside Lambda functions) and finally invoke it like:

os.system('python /tmp/myscript.py')

edited Apr 1, 2019 at 13:40

answered Apr 1, 2019 at 13:35

Thales Minussi

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