db = dataset.connect(url='mysql://user:password@host:port/db?charset=utf8')

# 查询一行，支持多个关键字搜索，中间以逗号隔开
res = db["instance"].find_one(Id = 6057)

#查询多行

res1 = db["instance"].find()

res1 为列表，每个元素为一个字典

acc_ins = {}
for k,v in res.items():
    acc_ins[k] = v
acc_ins['Id'] = 26057
acc_ins['Name'] = 'aaa'
acc_ins['tanceId'] = 'ACCTINS_2663'

#用字典插入数据

db["instance"].insert(acc_ins)

# 存在则更新不存在插入，ID为26057，Name的值，ensure = False 

db["instance"].upsert(dict(Id=26057, Name='dddddeeeee'),['Id'] ,ensure = False)
res = db["instance"].find_one(Id = 26057)
print(res)

出处：https://www.cnblogs.com/xiaowandian/p/13831264.html