问题
In a mongo command line I can run
db.my_collection.stats()
I need to get my collections stats from Python so I tried
from pymongo import MongoClient
client = MongoClient()
db = client.test_database
collection = db.test_collection
collection.stats()
But I get
TypeError: 'Collection' object is not callable.
If you meant to call the 'stats' method on a 'Collection' object it is failing because no such method exists.
This is because pymongo does not support this method. How do I send raw mongoDB commands to mongo through Python?
回答1:
from pymongo import MongoClient
client = MongoClient()
db = client.test_database
print(db.command("collstats", "test_collection"))
回答2:
Approach 1 with PyMongo:
client = pymongo.MongoClient(host = "127.0.0.1", port = 27017)
db = client.test_database
db.command("dbstats") # prints database stats for "test_db"
db.command("collstats", "test_collection") # prints collection-level stats
This can be done with this approach in Django.
from django.db import connections
database_wrapper = connections['my_db_alias']
eggs_collection = database_wrapper.get_collection('eggs')
eggs_collection.find_and_modify(...)
From django-mongodb-engine docs:
django.db.connections is a dictionary-like object that holds all database connections – that is, for MongoDB databases, django_mongodb_engine.base.DatabaseWrapper instances.
These instances can be used to get the PyMongo-level Connection, Database and Collection objects.
来源：https://stackoverflow.com/questions/27297727/how-to-run-raw-mongodb-commands-from-pymongo