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ai-workflow-course/modules/10-reviewing-code-you-didnt-write/lab/start/cli.py
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feat(labs): make every lab a self-contained, skip-friendly starting point
Each lab now stands on its own; no hard dependency on prior labs.
- App-based labs get a canonical tasks-app snapshot in lab/start/ (three
  baselines: v0 add/list/done; v1 +count; v2 +count/delete), assigned by where
  each module sits in the command timeline. Modules with a purpose-built app
  (M10 trap, M13 planted bug, M21) snapshot their own app; planted devices kept.
- Self-contained labs (M15/17/18/19/22/23/24/25/27, which operate on their own
  lab files) get a preamble pointing at modules/NN/lab/.
- Every module + capstone gets a "Starting point (skip-friendly)" preamble:
  copy the snapshot, git init -b main, commit -> clean status, then start.

Lets a learner skip around or recover: copy start/, commit, go. All snapshots
run; tools/check.sh passes; no em-dashes.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TfzV5QvtPDz8LJS3Pu5VLT
2026-06-23 18:24:17 -04:00

63 lines
1.5 KiB
Python

"""Tiny command-line front end for the demo task app.
Run it:
python cli.py add "write the lesson"
python cli.py list
python cli.py done 0
State is kept in tasks.json next to this file. The `done` command turns a bad index into a
clean error message and a non-zero exit code; note that behavior before you review the AI
change, so you can tell if the change quietly alters it.
"""
import json
import sys
from pathlib import Path
from tasks import Task, TaskList
STATE = Path(__file__).parent / "tasks.json"
def load() -> TaskList:
if not STATE.exists():
return TaskList()
raw = json.loads(STATE.read_text())
return TaskList(tasks=[Task(**t) for t in raw])
def save(tlist: TaskList) -> None:
STATE.write_text(json.dumps([t.__dict__ for t in tlist.tasks], indent=2))
def main(argv: list[str]) -> int:
tlist = load()
if not argv:
print("usage: python cli.py [add <title> | list | done <index>]")
return 1
command = argv[0]
if command == "add":
title = " ".join(argv[1:])
tlist.add(title)
save(tlist)
print(f"added: {title}")
elif command == "list":
print(tlist.render())
elif command == "done":
try:
tlist.complete(int(argv[1]))
except IndexError as exc:
print(f"error: {exc}")
return 1
save(tlist)
print("updated")
else:
print(f"unknown command: {command}")
return 1
return 0
if __name__ == "__main__":
raise SystemExit(main(sys.argv[1:]))