[LI (ktz03)]

Motivation & Context

The Python sample overview tells readers to configure a .env file or FOUNDRY_* environment variables for the getting-started samples. Those samples pass example project_endpoint and model arguments directly to FoundryChatClient, so setting environment variables alone leaves the placeholders in use.

Description & Review Guide

• What are the major changes? Explain that the example constructor values must be replaced. For environment-based configuration, tell readers to remove the explicit arguments and call load_dotenv() for the Option 1 .env setup. Link the existing getting-started prerequisites.
• What is the impact of these changes? Documentation only, matching the current samples and client settings behavior. No runtime or API changes.
• What do you want reviewers to focus on? Consistency with 01-get-started/README.md and the explicit arguments in 01_hello_agent.py. Source and documentation checks were performed; no model calls, SDK build, or product test suite was run.

Related Issue

N/A - trivial change. This corrects setup instructions to match the existing sample and its already-documented configuration procedure; no behavior or design change is proposed.

AI Assistance

• No material AI assistance was used.
• This is an AI-assisted contribution. I reviewed, understood, and verified all submitted content and accept responsibility for it.

AI assistance details: Codex: documentation and this PR description.

Contribution Checklist

• The code builds clean without any errors or warnings
• All unit tests pass, and I have added new tests where possible
• The PR follows the Contribution Guidelines
• This PR links to an agreed issue with no competing open PR, or the Related Issue section documents a trivial-change or repository-automation exception.
• This is not a breaking change. If it is a breaking change, add the breaking change label (or add "[BREAKING]" to the title prefix, before or after any language prefix) — a workflow keeps the label and title prefix in sync automatically.

[Copilot]

🟢 Approval recommended

The focused documentation changes match the existing sample configuration behavior, with no unresolved issues.

No open issues 🎉

What changed in this PR

Clarifies environment setup in the Python sample overview to match the getting-started samples’ existing configuration behavior. This is documentation-only, with no runtime or API changes.

Changes:

• Explains that explicit FoundryChatClient example values must be replaced and override environment variables.
• Documents removing those arguments for environment-based configuration and calling load_dotenv() when using .env.
• Links to the getting-started prerequisites.

File	Description
python/​samples/​README.md	Clarifies constructor overrides and environment-based setup for getting-started samples.

_{Review effort: Balanced}