1.准备

官方链接
http://docs.peewee-orm.com/en/latest/peewee/api.html#ColumnBase

安装
pip install peewee 

2.创建模型

from peewee import MySQLDatabase, Model, CharField, TextField, DateTimeField, AutoField, IntegerField, DecimalField, \
    BigAutoField, FloatField

class configdata(Model):
    id = AutoField(verbose_name='id', db_column='id', primary_key=True)
    key = CharField(verbose_name="key", max_length=50, null=False, primary_key=True)
    value = TextField(verbose_name="value", null=False)
    updatetime = DateTimeField(verbose_name="更新时间")

    class Meta:
        database = db

3.使用

1.查询

单个查询
sql_data = configdata.get(configdata.key == 'xxx')
批量查询
configdata.filter(key__in=key_list)

2.更新

configdata.update(**item).where(configdata.key == 'xxx').execute()
批量更新
while db.atomic():# 使用事务
  configdata.bulk_update(update_list, fields=fields, batch_size=32000)  # update_list一个模型组成的list，fields要更新的字段，batch_size切片写入最大块

3.插入

插入
Setting.insert_many([
    {'key': 'host', 'value': '192.168.1.2'},
    {'key': 'port': 'value': '1337'},
    {'key': 'user': 'value': 'nuggie'}]).execute()

批量插入
while db.atomic():# 使用事务
    configdata.bulk_create(create_list, batch_size=32000)

4.插入或更新

configdata.replace(**item).execute()

5.删除

sql_data = configdata.get(configdata.key == 'xxx')
sql_data.delete_instance()