nosql--10MongoBD与python交互

from pymongo import MongoClient

# 实例化Client,建立连接
client = MongoClient(host="127.0.0.1", port=27017)

# 自动创建test数据库和集合t251
collection = client["test"]["t251"]

# 往集合内插入数据
# collection.insert({"_id":10010,"name":"zhangyue","age":10})

# 插入多条数据,insert_many
# data_list = [{"name":"test{}".format(i)}for i in range(100)]
# collection.insert_many(data_list)

# 查询一个记录
t = collection.find_one({"name": "zhangyue"})
print(t)

print(11111111111111111111111111111)

t = collection.find()
for i in t:
    #　这是一个游标对象，只能进行一次遍历，第二次遍历游标就在最后了，找不到对象
    print(i)

向集合中插入1000条文档

from pymongo import MongoClient

client = MongoClient()

cllection = client["work1"]["collection1"]

data_list = [{"name":"py{}".format(i),"_id":"{}".format(i)} for i in range(1000)]

cllection.insert_many(data_list)

t = cllection.find()

for i in t :
    print(i)