Python MongoDB into the document

chapter

MongoDB similar records and documents in the SQL database.

Insert a document to a collection

To record (or MongoDB referred to in the document) is inserted into the collection, use the insert_one()method.

insert_one()The first argument is a dictionary containing the document you want to insert the name and value of each field.

Examples

Inserting records in the "customers" set:

myclient = pymongo.MongoClient("mongodb://localhost:27017/")
mydb = myclient["mydatabase"]
mycol = mydb["customers"]

mydict = { "name": "John", "address": "Highway 37" }

x = mycol.insert_one(mydict)

Returns the _id field

insert_one()Method returns the InsertOneResultobject that has a inserted_idproperty, saved id insert the document.

Examples

Insert a record in the "customers" set, and returns the _idvalue of the field:

mydict = { "name": "Peter", "address": "Lowstreet 27" }

x = mycol.insert_one(mydict)

print(x.inserted_id)

When inserted into the document, if not specified _id, it will automatically assign a unique id.

In the above example, _id field is not specified, MongoDB is recorded (document) is assigned a unique _id.

Insert multiple documents

To insert a set of multiple documents, you can use the insert_many()method.

insert_many()The first parameter is a dictionary method list containing data to be inserted:

Examples

import pymongo

myclient = pymongo.MongoClient("mongodb://localhost:27017/")
mydb = myclient["mydatabase"]
mycol = mydb["customers"]

mylist = [
  { "name": "Amy", "address": "Apple st 652"},
  { "name": "Hannah", "address": "Mountain 21"},
  { "name": "Michael", "address": "Valley 345"},
  { "name": "Sandy", "address": "Ocean blvd 2"},
  { "name": "Betty", "address": "Green Grass 1"},
  { "name": "Richard", "address": "Sky st 331"},
  { "name": "Susan", "address": "One way 98"},
  { "name": "Vicky", "address": "Yellow Garden 2"},
  { "name": "Ben", "address": "Park Lane 38"},
  { "name": "William", "address": "Central st 954"},
  { "name": "Chuck", "address": "Main Road 989"},
  { "name": "Viola", "address": "Sideway 1633"}
]

x = mycol.insert_many(mylist)

# 打印文档_id值列表:
print(x.inserted_ids)

insert_many()Method returns the InsertManyResultobject that has a inserted_idsproperty, save all inserted into the document's id

Insert multiple documents with the specified id

When inserted into the document, if you do not want to assign MongoDB is a document id, you can specify _idfields.

Note, _id value must be unique, any two documents can have the same _id.

Examples

import pymongo

myclient = pymongo.MongoClient("mongodb://localhost:27017/")
mydb = myclient["mydatabase"]
mycol = mydb["customers"]

mylist = [
  { "_id": 1, "name": "John", "address": "Highway 37"},
  { "_id": 2, "name": "Peter", "address": "Lowstreet 27"},
  { "_id": 3, "name": "Amy", "address": "Apple st 652"},
  { "_id": 4, "name": "Hannah", "address": "Mountain 21"},
  { "_id": 5, "name": "Michael", "address": "Valley 345"},
  { "_id": 6, "name": "Sandy", "address": "Ocean blvd 2"},
  { "_id": 7, "name": "Betty", "address": "Green Grass 1"},
  { "_id": 8, "name": "Richard", "address": "Sky st 331"},
  { "_id": 9, "name": "Susan", "address": "One way 98"},
  { "_id": 10, "name": "Vicky", "address": "Yellow Garden 2"},
  { "_id": 11, "name": "Ben", "address": "Park Lane 38"},
  { "_id": 12, "name": "William", "address": "Central st 954"},
  { "_id": 13, "name": "Chuck", "address": "Main Road 989"},
  { "_id": 14, "name": "Viola", "address": "Sideway 1633"}
]

x = mycol.insert_many(mylist)

# 打印文档_id值列表:
print(x.inserted_ids)