如何使用python快速高效地更新数以百万计的MongoDB文档？

from pymongo import MongoClient

client = MongoClient('mongodb://localhost:27017/')
db = client['mydatabase']
collection = db['mycollection']

# 更新单个文档
result = collection.update_one({"_id": 1}, {"$set": {"status": "updated"}})
print(result.modified_count)

from pymongo import MongoClient, UpdateOne

client = MongoClient('mongodb://localhost:27017/')
db = client['mydatabase']
collection = db['mycollection']

# 批量更新文档
bulk_operations = []
for doc in collection.find({"status": "pending"}):
    bulk_operations.append(UpdateOne({"_id": doc["_id"]}, {"$set": {"status": "updated"}}))

result = collection.bulk_write(bulk_operations)
print(result.modified_count)