MongoDB-based Python addition, deletion, modification, and query (crud)

1. Download the python driver of MongoDB.

2. Create a New py script (you can install the pydev plug-in eclipse, which is very convenient)

 

# Coding = UTF-8
Import pymongo
Connection = pymongo. Connection ("192.168.0.101", 27017)
DB = connection. Python
Print dB. Name
Print dB. my_collection

DB. my_collection.save ({"X": 10 })

DB. my_collection.save ({"X": 8 })
DB. my_collection.save ({"X": 11 })
DB. my_collection.save ({"X": 13 })
DB. my_collection.save ({"X": 14, "Y": 3 })

Print dB. my_collection.find_one ()
Print 'all data, X value'
For item in db. my_collection.find ():
Print item ["X"]
DB. my_collection.remove ({"Y": 3 });
Print 'all data after deletion, X value'
For item in db. my_collection.find ():
Print item ["X"]
DB. my_collection.update ({"X": 8 },{ "X": 2 })
Print 'all data after update, X value'
For item in db. my_collection.find ():
Print item ["X"]
Print dB. my_collection.create_index ("X ")
# Create an index Query
For item in db. my_collection.find (). Sort ("X", pymongo. ascending ):
Print item ["X"]

Print [item ["X"] For item in db. my_collection.find (). Limit (2). Skip (1)]

 

3. MongoDB does not need to manually create databases and tables, and the program will automatically create a new one before insertion. The execution result is as follows:

Python
Collection (Database (connection ('192. 168.0.101 ', 192), u'python'), u'my _ collect ')
{U 'X': 10, U' _ id': objectid ('4d2961921e66a10a940000000000 ')}
All data, X value
10
8
11
13
14
All data after deletion, X value
10
8
11
13
All data after update, X value
10
2
11
13
X_1
2
10
11
13
[2, 11]

 

4, note: More pymongo documents, follow the http://api.mongodb.org/python/1.9%2B/api/index.html