pymongo-3.x

来源： https://stackoverflow.com/questions/42860060/pymongo-importerror-no-module-named-pymongo

来源： https://stackoverflow.com/questions/42860060/pymongo-importerror-no-module-named-pymongo

问题 I'm trying out pymongo for the first time and I keep getting a ServerSelectionTimeoutError. When using mongo commandline to login I run a command as follows $ mongo-3.0 --ssl test.net:27080/db_qa --sslAllowInvalidCertificates -u content -p MongoDB shell version: 3.0.12 Enter password: and I'm able to connect fine but with pymongo I get the error pymongo.errors.ServerSelectionTimeoutError: test.net:27080: [Errno 60] Operation timed out My code is as follows from pymongo import MongoClient

问题 I am trying to fetch 3 days old data from mongoDB using python (pymongo). I am quite new to mongodb. How to do this ?.Thanks in advance. My db entries are following : { "_id" : ObjectId("5d720d1d9c338906de2dbc812"), "timestamp" : ISODate("2019-11-12T08:00:00Z"), "city" : 'abc' } { "_id" : ObjectId("5d720d1d9c338906de2dbc813"), "timestamp" : ISODate("2019-11-11T09:00:00Z"), "city" : 'xyz' } { "_id" : ObjectId("5d720d1d9c338906de2dbc84"), "timestamp" : ISODate("2019-07-18T06:00:00Z"), "city":

问题 This question already has answers here : Retrieve only the queried element in an object array in MongoDB collection (11 answers) Closed last year . How can I query (in MongoDB) this nested json structure in order to get only the nested object which has the "position" value equal to "currentPosition" value? { "JobId": "123" "currentPosition" : NumberInt(18), "details" : [ { "position": NumberInt(18), "fname" : "Alexander", "lname" : "A", }, { "position": NumberInt(18), "fname" : "Doug", "lname

问题 Am trying to find documents from the mongo collection using the following query. db.collection_name.find({"id" : Id}) where Id is the variable am getting as input. But it doesn't work. If I hard code the value like this db.collection_name.find({"id" : "1a2b"}) it works. "id" is of string type and am using pymongo to access mongo DB. code : client = MongoClient("localhost:27017") db = client['sample_database'] Id = raw_input("enter id") cursor = db.collection_name.find({"id" : Id}) 回答1: Try

问题 I checked the permission on the /etc/mongod.conf : vagrant@trusty64:/vagrant/test$ sudo docker exec -it mongodb ls -l /etc/mongod.conf -rw-r--r-- 1 root root 472 Jun 22 00:09 /etc/mongod.conf Then, I checked it's corresponding content: vagrant@trusty64:/vagrant/test$ sudo docker exec -it mongodb cat /etc/mongod.conf ## mongodb.conf, this file is enforced by puppet. ## ## Note: http://docs.mongodb.org/manual/reference/configuration-options/ ## ## where and how to store data. storage: dbPath:

问题 I just upgraded to pymongo==3.0.3 via pip install --upgrade pymongo , and I'm flooded with ImportError : In [2]: pymongo.version Out[2]: '3.0.3' In [3]: from pymongo import Connection --------------------------------------------------------------------------- ImportError Traceback (most recent call last) <ipython-input-3-dd44bc3249d3> in <module>() ----> 1 from pymongo import Connection ImportError: cannot import name Connection In [4]: from pymongo import connection -------------------------

问题 I think the query is correct but still an error. findQ = {"fromid": wordid}, {"toid":1} res= self.db.wordhidden.find(findQ) However, find_one(findQ) works. So I can't find the wrong thing. I use python 3.6 and pymongo. Here is my code: def getallhiddenids(self,wordids,urlids): l1={} for wordid in wordids: findQ = {"fromid": wordid}, {"toid":1} res= self.db.wordhidden.find(findQ) for row in res: l1[row[0]]=1 for urlid in urlids: findQ = {"toid": urlid}, {"fromid":1} res= self.db.hiddenurl.find

问题 This question already has answers here : Check that Field Exists with MongoDB (4 answers) Closed 8 months ago . I am trying to figure out how to match a key and return all the values for that key. Is it possible to give the value as a wildcard? I want to return everything for that specific key using wildcard on the value. db.collection.find({"key" :"*"}) Also I was hoping this would return the entire collection as well that had the key with the wildcard value match as well. 回答1: You may be