flask基础 MongoDB
标签：大写 ring 根据 当前日期 代码 目录 cli == image
flask基础 MongoDB
pymongo
# 建立连接,mongo的默认端口是27017
mongo_client = pymongo.MongoClient(host=‘127.0.0.1‘,port=27017)
# 连接s12day117数据库
mongo_db = mongo_client[‘s12day117‘]
# 查询
res = mongo_db.user.find()
print(res)
for i in res:
print(i)
res = mongo_db.user.find_one({‘name‘:‘yang‘})
print(res)
#插入
res = mongo_db.chat.inset_one({})
print(res,res.inserted_id)
res = mongo_db.chat.inset_many([{},{},{}])
print(res,res.inserted_ids)
# 改
res = mongo_db.user.update_one({‘name‘:‘yang‘},{‘$set‘:{‘age‘:888}})
res = mongo_db.user.update_many({"age":{"$gte":0}},{"$set":{"age":888}})
print(res,dir(res),res.modified_count)
# 删除
res = mongo_db.user.delete_one({"name":"xiaozhuer"})
res = mongo_db.user.delete_many({})
print(res,dir(res),res.deleted_count)
res = mongo_db.user.find_one({"name":"yang"})
print(res)
for index,item in enumerate(res.get(‘course‘)):
if res.get(‘course‘)[index][‘course_name‘] == ‘linux‘:
res.get(‘course‘)[index][‘course_name‘] = ‘django框架‘
res = mongo_db.user.update_one({‘name‘:‘yang‘},{‘$set‘:res})