安装 $ pip install pymongo//指定pymongo版本$ pip install pymongo==2.1.1//upgrade现有的版本$ pip install –upgrade pymongo 使用 from pymongo import MongoClientconnection = MongoClient()#指定host和portconnection = MongoClient(‘localhost’, 27
安装
$ pip install pymongo//指定pymongo版本$ pip install pymongo==2.1.1//upgrade现有的版本$ pip install --upgrade pymongo
使用
from pymongo import MongoClientconnection = MongoClient()#指定host和portconnection = MongoClient('localhost', 27017)db = connection.test_database
插入
>>> import dateti<span style="color:transparent">本文来源gaodai#ma#com搞*!代#%^码网%</span>me>>> post = {"author": "Mike",... "text": "My first blog post!",... "tags": ["mongodb", "python", "pymongo"],... "date": datetime.datetime.utcnow()}>>> posts = db.posts>>> post_id = posts.insert(post)>>> post_idObjectId('...')#多个插入>>> new_posts = [{"author": "Mike",... "text": "Another post!",... "tags": ["bulk", "insert"],... "date": datetime.datetime(2009, 11, 12, 11, 14)},... {"author": "Eliot",... "title": "MongoDB is fun",... "text": "and pretty easy too!",... "date": datetime.datetime(2009, 11, 10, 10, 45)}]>>> posts.insert(new_posts)[ObjectId('...'), ObjectId('...')]
查找
>>>posts.find_one({"author": "Mike"}){u'date': datetime.datetime(...), u'text': u'My first blog post!', u'_id': ObjectId('...'), u'author': u'Mike', u'tags': [u'mongodb', u'python', u'pymongo']}#若不存在则没有返回值#按id查找>>>posts.find_one({"_id": post_id}){u'date': datetime.datetime(...), u'text': u'My first blog post!', u'_id': ObjectId('...'), u'author': u'Mike', u'tags': [u'mongodb', u'python', u'pymongo']}#注意post_id为ObjectId类型而不是string, 如果是string则会找不到#所以当从请求的url中获取id后必须把string类型转换成ObjectId类型再使用from bson.objectid import ObjectId# The web framework gets post_id from the URL and passes it as a stringdef get(post_id): # Convert from string to ObjectId: document = connection.db.collection.find_one({'_id': ObjectId(post_id)})
count
>>> posts.count()3>>> posts.find({"author": "Mike"}).count()2
sort和limit
#-1为倒序db.posts.find().sort({'author':-1}).limit(10)
update
db.posts.update({"_id": post_id}, {"$set": {"author":"Mark"}})
原文地址：PyMongo笔记, 感谢原作者分享。
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转载请注明原文链接：PyMongo笔记
转载请注明原文链接：PyMongo笔记
