How to access an AWS Lambda environment variable from Python

Question

Using the new environment variable support in AWS Lambda, I've added an env var via the webui for my function.

How do I access this from Python? I tried:

import os MY_ENV_VAR = os.environ['MY_ENV_VAR']

but my function stopped working (if I hard code the relevant value for MY_ENV_VAR it works fine)

Answer 1

Try this code hope it will work I used this code; it includes both cases, setting the variable from the handler and setting it from outside the handler.

#!/usr/bin/env python

# -*- coding: utf-8 -*-

"""Trying new lambda stuff"""

import os

import configparser

class BqEnv(object):

"""Env and self variables settings"""

def __init__(self, service_account, configfile=None):

config = self.parseconfig(configfile) self.env = config self.service_account = service_account

@staticmethod

def parseconfig(configfile):

"""Connection and conf parser"""

config = configparser.ConfigParser()

config.read(configfile) env = config.get('BigQuery', 'env')

return env def variable_tests(self):

"""Trying conf as a lambda variable"""

my_env_var = os.environ['MY_ENV_VAR']

print my_env_var

print self.env

return True

def lambda_handler(event, context):

"""Trying env variables."""

print event configfile = os.environ['CONFIG_FILE']

print configfile print type(str(configfile))

bqm = BqEnv('some-json.json', configfile)

bqm.variable_tests()

return True