"errorMessage": "module initialization error"

Question

Using Python, I followed and when it came to Test it, the following error popped up:

{
  "errorMessage": "module initialization error"
}

What could I have done wrong?

Solution

You don't need any environment variables. Just keep it simple

from __future__ import print_function

import os
from datetime import datetime
from urllib2 import urlopen


def lambda_handler(event, context):
    url = 'https://www.google.com' # change it with your own
    print('Checking {} at {}...'.format(url, datetime.utcnow()))
    html = urlopen(url).read()
    # do some processing
    return html

Here is another simple example.

from __future__ import print_function


def lambda_handler(event, context):
    first = event.get('first', 0)
    second = event.get('second', 0)
    sum = first + second
    return sum

Here is a sample event which will be used to invoke this lambda. you can configure event from Lambda web interface. (or google it)

{
  "first": 10,
  "second": 23
}

Comments

[Admin]

Appreciate your response! But do you mind explaining what you are doing for learning purposes? And where do I get the URL? And when would I need the environment variables?

[Zohaib Ijaz]

In this lambda function, we are retrieving an html page. but you lambda can do anything. e.g. you can add two numbers. let me change the code

[Admin]

Ah got it! Thought that was the solution to the problem rather than an example. But in the examples provided, what really is the solution to the problem I encountered? Also, would like to use Scheduled Event in the Sample event list as tutorial suggests.

[Zohaib Ijaz]

my question is what do you want to achieve? tell me your use case?

[Admin]

Definitely, wondering what's resolving the issue. Is it because I didn't provide SITE = os.environ['site'] , yet trying to access it?

[Admin]

Also got a new error with the sum example provided: { "stackTrace": [ [ "/var/task/lambda_function.py", 9, "lambda_handler", "return {statusCode: 200, body: {'answer': sum}}" ] ], "errorType": "NameError", "errorMessage": "global name 'statusCode' is not defined" }

[Zohaib Ijaz]

Exactly. environment variables are set while creating lambda but in my opinion, passing site url through environment variable is not a good idea unless you have different environments like dev, staging, production etc. if you that value from environment variables, set that first

[Zohaib Ijaz]

I missed quotes , change statusCode to "statusCode"

[Zohaib Ijaz]

And I think you know what is an upvote and selected answer :P XD

[Admin]

Let us continue this discussion in chat.