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Running on Zero
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Download public-domain example images for all four demo apps.
Run once before first launch: python scripts/fetch_examples.py
"""
import urllib.request
from pathlib import Path
EXAMPLES_DIR = Path(__file__).parent.parent / "examples"
EXAMPLES_DIR.mkdir(exist_ok=True)
# Each entry: (local_filename, url, description)
IMAGES = [
# allergen_lens — food labels
(
"allergen_label.jpg",
"https://upload.wikimedia.org/wikipedia/commons/thumb/3/33/Nutrition_facts_label_example.jpg/640px-Nutrition_facts_label_example.jpg",
"Nutrition facts label (allergen_lens example 1)",
),
(
"allergen_label2.jpg",
"https://upload.wikimedia.org/wikipedia/commons/thumb/a/a3/Nutritional_labels.jpg/640px-Nutritional_labels.jpg",
"Ingredient list label (allergen_lens example 2)",
),
# camera_roll_concierge — varied everyday photos
(
"concierge_receipt.jpg",
"https://upload.wikimedia.org/wikipedia/commons/thumb/1/18/Store_receipt.jpg/640px-Store_receipt.jpg",
"Receipt photo (camera_roll example)",
),
(
"concierge_recipe.jpg",
"https://upload.wikimedia.org/wikipedia/commons/thumb/3/3a/Cat_03.jpg/640px-Cat_03.jpg",
"Placeholder photo (camera_roll example)",
),
# object_oracle — interesting objects
(
"oracle_object.jpg",
"https://upload.wikimedia.org/wikipedia/commons/thumb/4/47/PNG_transparency_demonstration_1.png/280px-PNG_transparency_demonstration_1.png",
"Interesting object (oracle example)",
),
# whats_that_error — error screens
(
"error_screen.jpg",
"https://upload.wikimedia.org/wikipedia/commons/thumb/3/3b/Windows_9X_BSOD.png/640px-Windows_9X_BSOD.png",
"BSOD error screen (whats_that_error example 1)",
),
(
"error_screen2.jpg",
"https://upload.wikimedia.org/wikipedia/commons/thumb/e/e5/Windows_XP_BSOD.png/640px-Windows_XP_BSOD.png",
"XP BSOD error screen (whats_that_error example 2)",
),
]
def fetch_all():
for filename, url, desc in IMAGES:
dest = EXAMPLES_DIR / filename
if dest.exists():
print(f" skip {filename}")
continue
print(f" get {filename} — {desc}")
try:
urllib.request.urlretrieve(url, dest)
print(f" ok {filename}")
except Exception as exc:
print(f" FAIL {filename}: {exc}")
if __name__ == "__main__":
print(f"Downloading examples to {EXAMPLES_DIR} ...")
fetch_all()
print("Done.")
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