Send Post request to an external API using AWS Lambda in python

Vendored requests are now removed from botocore.

Consider packaging your Lambda code with requirements.txt using CloudFormation package or SAM CLI packaging functionality.

My older answer from before vendored requests deprecation: You may be able to leverage requests module from the boto library without having to install or package your function.

Consider this import: import botocore.vendored.requests as requests

You need to install requests module to your project directory and create a lambda deployment package. See this link for details.

In short, you need to create your index.py file on you development system (PC or mac), install Python & pip on that system; them follow the steps in the doc. To create lambda, choose the 'Upload zip' option instead of the 'Edit inline' one