which-runtime 0.1.2

What is a Runtime?

A runtime is a specific computational environment where your code executes. This could be:

• Local development machine

• Cloud environments (AWS Lambda, EC2, Batch)

• Continuous Integration (CI) platforms (GitHub Actions, CodeBuild)

• Development environments (Cloud9)

• Containerized environments

Why Runtime Detection Matters

Different runtimes often require different configurations and behaviors:

• Authentication methods vary (local AWS CLI profiles vs. IAM roles)

• Resource access differs between environments

• Logging and monitoring approaches change

• Environment-specific optimizations

Key Features

• Detect runtime environment with simple boolean checks

• Support for multiple runtime types (local, cloud, CI)

• Lightweight and easy to integrate

• Helps create adaptive, environment-aware code

Quick Example

from which_runtime.api import runtime

if runtime.is_aws_lambda:
    # Lambda-specific configuration
    use_lambda_credentials()
elif runtime.is_local:
    # Local development setup
    use_local_aws_profile()

Install

which_runtime is released on PyPI, so all you need is to:

$ pip install which-runtime

To upgrade to latest version:

$ pip install --upgrade which-runtime