如何在与python集成的mongoDB中编写自动操作
我创建了收费详细信息如何在与python集成的mongoDB中编写自动操作,mongodb,python-2.7,python-3.x,pymongo,Mongodb,Python 2.7,Python 3.x,Pymongo,我创建了收费详细信息 { "_id": "fee_details", "name": "Tution fees", "student_total": 30, "fee_notpaid": 29, "fee_paid_by": [{ "stu_name": "jaya", "date": "10-09-2014" }] } 我尝试使用以下查询输入由支付的费用详情: db.fee_details.findAndModify({
{
"_id": "fee_details",
"name": "Tution fees",
"student_total": 30,
"fee_notpaid": 29,
"fee_paid_by": [{
"stu_name": "jaya",
"date": "10-09-2014"
}]
}
我尝试使用以下查询输入由支付的费用详情:
db.fee_details.findAndModify({
query: {
"_id": "fee_details",
"fee_notpaid": {
$gt: 0
}
},
update: {
$inc: {
"fee_notpaid": -1
},
$push: {
"fee_paid_by": {
"stu_name": "jaya",
"date": "10-09-2014"
}
}
}
})
它在命令行上执行,并将由详细信息支付的费用添加到费用详细信息集合中。但我尝试了与python集成执行以下查询
c = db.fee_details.find_and_modify({
'$query': {
"_id": "fee_details",
"fee_notpaid": {
'$gt': 0
}
},
'$update': {
'$inc': {
"fee_notpaid": -1
},
'$push': {
"fee_paid_by": {
"stu_name": s_name,
"fee": fee
}
}
}
})
执行上述代码时,会出现错误,必须删除或更新
将由
支付的费用详情输入到
费用详情收款中的正确方法是什么
提前感谢。采用关键字参数,关键字名称不应以$
符号开头
>>> import pymongo
>>> client = pymongo.MongoClient()
>>> db = client.test
>>> col = db.collection
>>> name = 'jaya'
>>> fee = 11
>>> query = {'_id': 'free_details', 'free_notpaid': {'$gt':0}}
>>> update = {'$inc': {'free_notpaid': -1}, '$push': {'free_paid_by': {'stu_name': name, 'fee': fee}}}
>>> col.find_and_modify(query=query, update=update)
find\u and\u modify
方法是不推荐的,因为您应该使用pymongo 3.0,或者相反
>>> col.find_one_and_update(filter=query, update=update)