pymongo使用总结

# easy_install pymongo

>>> import pymongo
>>> conn = pymongo.MongoClient(host=host,port=port,tz_aware=False)

>>> conn.database_names()
[u'test1', u'test2', u'admin', u'local']

>>> db = conn.get_database("db_name")

>>> db.authenticate('username', 'password')

True

>>> db.collection_names()
[u'account', u'role', u'item', u'online']

>>> account = db.get_collection("col_name")

>>> account.find_one()

>>> account.find_one().keys()

>>> for i in account.find():
... print i

>>> account.find().count()

>>> for i in account.find({"name": "xxx"}):
... print i

>>> account.find().sort("name", pymongo.ASCENDING)
>>> account.find().sort([("name", pymongo.ASCENDING), ("active_time", pymongo.DESCENDING)])

>>> account.insert({"name": "mike", "active_time": "20130408"})

>>> account.update({"name": "mike"}, {"$set": {"active_time": "20130408120000"}})
注：如果数据中没有键-值"name": "mike"， 会新增"active_time": "20130408120000"

>>> account.remove({"name": "mike"})

方法1.
import re
{'xxx':re.compile('xxx')}

方法2. 
{'xxx':{'$regex':'xxx'}

account.find({ $or: [ { title: {$regex: 'test'} }, { intro: {$regex: 'test'} } ] })

#! /usr/bin/env python
# --*-- coding:utf-8 --*--

import pymongo
import re


host="**.**.**.**"
port=27017
conn  = pymongo.MongoClient(host=host,port=port,tz_aware=False)

db_name = "test"
log_name = "col"

db_test = conn.get_database(db_name)
col_col = db_test.get_collection(log_name)

#print "db names:", conn.database_names()
#print "col names:", db_test.collection_names()
#print "one_line:", col_col.find_one()

#print "one_line_keys:", col_col.find_one().keys()

#col_col.insert({"message2":"hihihi", "msg":"123"})
#col_col.update({"message":"hello*3"}, {"$set":{"message":"hello*3*9"}})
import  datetime

y,M,d,h,m,s = 2016,2,13,18,30,0
d = datetime.datetime(y,M,d,h,m,s)
delta = datetime.timedelta(hours=8)

d = d-delta

#logs = col_col.find( {"data":{"$gt":d} } )
#logs = col_col.find( {"message":re.compile("hi")} )
logs = col_col.find( {"$and": [{"message":re.compile("hi")}, {"data":{"$gt":d} }]} )

c = logs.count()

for l in logs:
    print l

print "count:", c
print "END!"