Check that Sophie picture contest criteria has been respected

The rules are :

• a picture can’t be resubmitted
• a participant cannot submit more than 3 pictures

from collections import defaultdict
from campbot import CampBot

bot = CampBot(min_delay=0.01)

article_ids = [
    187913,
    237549,
    300413,
    374949,
    465897,
    555996,
    673796,
    809627,
    937458,
    1058594,
    1058594,
]

print("Load images of previous challenges", end ="")
images_id = {}
for article_id in article_ids:
    article = bot.wiki.get_article(article_id)
    for image in article.associations.images:
        images_id[image.document_id] = article_id
print(" - Ok")

print("Check that no image has been submitted in a previous challenges", end="")
article = bot.wiki.get_article(1251594)
for image in article.associations.images:
    if image.document_id in images_id:
        raise Exception(f"Image {image.document_id} has been submitted on article {images_id[image.document_id]}")
print(" - Ok")

print("Check that no user has submitted more than 3 images:")
users = defaultdict(list)
for image in article.associations.images:
    full_image = bot.wiki.get_image(image.document_id)
    users[full_image.creator['user_id']].append(image.document_id)

for user, images in users.items():
    if len(images) > 3:
        print(f"User {user} has submitted {len(images)} images: {images}")