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Checkpoint

One last thing before we move on. Same surface as a write step — but the lesson doesn't complete until this passes.

Lesson two lock-in. The starter declares three variables for the Codex setup steps. Write three print(f"...") lines so the output is exactly:

install: brew on a mac, or npm which needs node first
verify: codex --version prints a version number
sign in: codex login, a browser approval with your chatgpt account

Type the three lines and run it.

this step needs the editor

on desktop today; in the app (coming soon). save your spot and we'll bring you back here when you're ready.

open this same url on a laptop to keep going today.