Install

pymongo document

install pymongo from the tar package download from website

python setup.y install

Usage

# import

from pymongo import MongoClient

# Making a Connection with MongoClient

client = MongoClient(host='127.0.0.1', port=27017)

# use the MongoDB URI format:

# client = MongoClient('mongodb://localhost:27017/')

# getting a database

db_mark = client['mark']

# getting a collection

c_student = db_mark.student

# getting all of the documents in collection c_student

students = c_student.find()

for student in students:

    print(student)

Insert

The three methods to insert data to collection， obviously， insert() method is deprecated.

# Insert an iterable of documents

stu.insert_many(students)

# insert is deprecated. Use insert_one or insert_many instead

stu.insert()

# Insert a single document

stu.insert_one()

from pymongo import MongoClient

client = MongoClient('mongodb://localhost:27017/')

db = client['python']

# stu = db.create_collection('stu')

stu = db.stu

students = [

    {'name': 'jackson', 'age': 17, 'gender': 1},

    {'name': 'amada', 'age': 19, 'gender': 0},

    {'name': 'micheal', 'age': 23, 'gender': 1},

    {'name': 'lucy', 'age': 16, 'gender': 0},

    {'name': 'happy', 'age': 12, 'gender': 1},

    {'name': 'java', 'age': 34, 'gender': 0},

    {'name': 'python', 'age': 21, 'gender': 1},

    {'name': 'ruby', 'age': 11, 'gender': 1},

]

stu.insert_many(students)

#stu.insert()

#stu.insert_one()

Delete

stu.delete_many()  # justOne:False

stu.delete_one()  # justOne:True

Update

stu.update()

stu.update_many()

stu.update_one()

Search

find()

stu.find()

stu.find_one()

stu.find_one_and_replace()

stu.find_one_and_delete()

stu.find_one_and_update()

# show total number

stu.count()

aggregate()

In [22]: s.aggregate([{'$project':{'_id':0}}])

Out[22]: <pymongo.command_cursor.CommandCursor at 0x7efdda495a20>

In [23]: ret=s.aggregate([{'$project':{'_id':0}}])                                                                                        

In [24]: for x in ret:

    ...:     print(x)

    ...:

{'name': 'jack', 'age': 12, 'gender': 1}

{'name': 'rose', 'age': 11, 'gender': 0}

{'name': 'jackson', 'age': 17, 'gender': 1}

{'name': 'amada', 'age': 19, 'gender': 0}

{'name': 'micheal', 'age': 23, 'gender': 1}

{'name': 'lucy', 'age': 16, 'gender': 0}

{'name': 'happy', 'age': 12, 'gender': 1}

End

fatal method to serach data from mongodb database is use aggregate