"errorMessage": "module initialization error" - amazon-web-services

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?
from __future__ import print_function
import os
from datetime import datetime
from urllib2 import urlopen
SITE = os.environ['site'] # URL of the site to check, stored in the site environment variable, e.g. https://aws.amazon.com
EXPECTED = os.environ['expected'] # String expected to be on the page, stored in the expected environment variable, e.g. Amazon
def validate(res):
'''Return False to trigger the canary
Currently this simply checks whether the EXPECTED string is present.
However, you could modify this to perform any number of arbitrary
checks on the contents of SITE.
'''
return EXPECTED in res
def lambda_handler(event, context):
print('Checking {} at {}...'.format(SITE, event['time']))
try:
if not validate(urlopen(SITE).read()):
raise Exception('Validation failed')
except:
print('Check failed!')
raise
else:
print('Check passed!')
return event['time']
finally:
print('Check complete at {}'.format(str(datetime.now())))

Answer 1

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
}

Answer 2

In my case, I missed adding the logging_config.ini to the lambda function.
I guess you would face similar error when the lambda function doesn't find the referenced file or package.
Thanks to the new cloud9 IDE integration, I was able to create one on the fly.