[Lambda] Make import requests available [python]

things to do

↓ If you do this

↓ I want you to be like this

↓ However, it will be like this

{
  "errorMessage": "Unable to import module 'lambda_function': No module named 'requests'",
  "errorType": "Runtime.ImportModuleError"
}

Procedure outline

• Create a Layer file (zip) for requests to work
• Upload Layer file to Lambda
• Create a function using Layer

Create a Layer file

Work on the client. Just make pip work, zip the one with the external module and put it in from the aws admin console

For example, if you work on amazon linux2 ...

mkdir python/ 
cd python
yum -y install gcc gcc-c++ kernel-devel python-devel libxslt-devel libffi-devel openssl-devel
yum -y install python-pip
pip install -t ./ requests
cd python
cd ..
zip -r Layer.zip python/

Register the zip with Lambda

Work in the AWS Management Console. In "Create Layer", insert the Layer.zip file you created earlier and you're done.

Function preparation

Select Layers Click "Add Layer" and the layer you created earlier will appear, so select it.

Creating a function

lambda_function.py

import requests

def lambda_handler(event, context):
    #Try throwing a GET on the test site
    response = requests.get('https://httpbin.org/get', params={'foo': 'bar'})
    return response.json()

Execution result

{
  "args": {
    "foo": "bar"
  },
  "headers": {
    "Accept": "*/*",
    "Accept-Encoding": "gzip, deflate",
    "Host": "httpbin.org",
    "User-Agent": "python-requests/2.24.0",
    "X-Amzn-Trace-Id": "Root=1-5f43a5ad-a04c8100f8c999999e8e2e"
  },
  "origin": "913.931.998.950",
  "url": "https://httpbin.org/get?foo=bar"
}