Python MongoDB 插入文档
你可以使用以下方法将文档存储到 MongoDB insert() 方法。此方法接受 JSON 文档作为参数。
语法
以下是插入方法的语法。
>db.COLLECTION_NAME.insert(DOCUMENT_NAME)
例子
> use mydb
switched to db mydb
> db.createCollection("sample")
{ "ok" : 1 }
> doc1 = {"name": "Ram", "age": "26", "city": "Hyderabad"}
{ "name" : "Ram", "age" : "26", "city" : "Hyderabad" }
> db.sample.insert(doc1)
WriteResult({ "nInserted" : 1 })
>
同样，你也可以使用 insert() method.
> use testDB
switched to db testDB
> db.createCollection("sample")
{ "ok" : 1 }
> data = [
{"_id": "1001", "name": "Ram", "age": "26", "city": "Hyderabad"},
{"_id": "1002", "name" : "Rahim", "age" : 27, "city" : "Bangalore" },
{"_id": "1003", "name" : "Robert", "age" : 28, "city" : "Mumbai" }
]
[
{"_id" : "1001", "name" : "Ram", "age" : "26", "city" : "Hyderabad"},
{"_id" : "1002", "name" : "Rahim", "age" : 27, "city" : "Bangalore"},
{"_id" : "1003", "name" : "Robert", "age" : 28, "city" : "Mumbai"}
]
> db.sample.insert(data)
BulkWriteResult({
"writeErrors" : [ ],
"writeConcernErrors" : [ ],
"nInserted" : 3,
"nUpserted" : 0,
"nMatched" : 0,
"nModified" : 0,
"nRemoved" : 0,
"upserted" : [ ]
})
>
使用 Python 创建集合
Pymongo 提供了一个名为 insert_one() 的方法来在 MangoDB 中插入一个文档。对于这个方法，我们需要以字典格式传递文档。
例子
下面的示例在名为 example 的集合中插入一个文档。
from pymongo import MongoClient
#Creating a pymongo client
client = MongoClient('localhost', 27017)
#Getting the database instance
db = client['mydb']
#Creating a collection
coll = db['example']
#Inserting document into a collection
doc1 = {"name": "Ram", "age": "26", "city": "Hyderabad"}
coll.insert_one(doc1)
print(coll.find_one())
{'_id': ObjectId('5d63ad6ce043e2a93885858b'), 'name': 'Ram', 'age': '26', 'city': 'Hyderabad'}
要使用 pymongo 将多个文档插入 MongoDB，你需要调用 insert_many() 方法。
from pymongo import MongoClient
#Creating a pymongo client
client = MongoClient('localhost', 27017)
#Getting the database instance
db = client['mydb']
#Creating a collection
coll = db['example']
#Inserting document into a collection
data = [
{"_id": "101", "name": "Ram", "age": "26", "city": "Hyderabad"},
{"_id": "102", "name": "Rahim", "age": "27", "city": "Bangalore"},
{"_id": "103", "name": "Robert", "age": "28", "city": "Mumbai"}
]
res = coll.insert_many(data)
print("Data inserted ......")
print(res.inserted_ids)
Data inserted ...... ['101', '102', '103']