[PYTHON/PYMONGO] Collection 클래스 : count_documents 메소드를 사용해 컬렉션의 문서 수 구하기

■ Collection 클래스의 count_documents 메소드를 사용해 컬렉션의 문서 수를 구하는 방법을 보여준다.

▶ 예제 코드 (PY)


from pymongo import MongoClient

databaseURL = "mongodb://localhost:27017/"

mongoClient = MongoClient(databaseURL)

testDatabase = mongoClient["testdb"]

userCollection = testDatabase["user"]

userCollection.delete_many({})

userList = []

for i in range(1, 6):
    user = {
        "email"    : f"user{i}@sample.com",
        "password" : f"password{i}"
    }

    userList.append(user)

userCollection.insert_many(userList)

userCount1 = userCollection.count_documents({})
userCount2 = userCollection.count_documents({"password" : {"$gt" : "password2"}})

print(userCount1)
print(userCount2)

from pymongo import MongoClient

databaseURL = "mongodb://localhost:27017/"

mongoClient = MongoClient(databaseURL)

testDatabase = mongoClient["testdb"]

userCollection = testDatabase["user"]

userCollection.delete_many({})

userList = []

for i in range(1, 6):

user = {

"email" : f"user{i}@sample.com",

"password" : f"password{i}"

}

userList.append(user)

userCollection.insert_many(userList)

userCount1 = userCollection.count_documents({})

userCount2 = userCollection.count_documents({"password" : {"$gt" : "password2"}})

print(userCount1)

print(userCount2)

▶ requirements.txt


dnspython==2.6.1
pymongo==4.7.2

dnspython==2.6.1

pymongo==4.7.2