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flask高级教程报错询问

flask高级教程报错询问

JERRY 2019-05-23 20:04:31
from datetime import datetime from contextlib import contextmanager from sqlalchemy import Column, Integer, SmallInteger from flask import current_app from flask_sqlalchemy import SQLAlchemy as _SQLAlchemy, BaseQuery __all__ = ['db', 'Base'] class SQLAlchemy(_SQLAlchemy):     @contextmanager     def auto_commit(self, throw=True):         try:             yield             self.session.commit()         except Exception as e:             self.session.rollback()             current_app.logger.exception('%r' % e)             if throw:                 raise e class Query(BaseQuery):     def filter_by(self, **kwargs):         if 'status' not in kwargs.keys():             kwargs['status'] = 1         return super(Query, self).filter_by(**kwargs) db = SQLAlchemy(query_class=Query) # class BaseMixin(object): #     def __getitem__(self, key): #         return getattr(self, key) class Base(db.Model):     __abstract__ = True     create_time = Column('create_time', Integer)     status = Column(SmallInteger, default=1)     def __init__(self):         self.create_time = int(datetime.now().timestamp())     @property     def create_datetime(self):         if self.create_time:             return datetime.fromtimestamp(self.create_time)         else:             return None     def delete(self):         self.status = 0     def set_attrs(self, attrs):         for key, value in attrs.items():             if hasattr(self, key) and key != 'id':                 setattr(self, key, value) class BaseNoCreateTime(db.Model):     __abstract__ = True     status = Column(SmallInteger, default=1)Traceback (most recent call last):  File "/Users/hank/Downloads/ResultDashboard/manager.py", line 5, in <module>    from app import app  File "/Users/hank/Downloads/ResultDashboard/app/__init__.py", line 9, in <module>    from app.models import db  File "/Users/hank/Downloads/ResultDashboard/app/models/__init__.py", line 5, in <module>    from .base import *  File "/Users/hank/Downloads/ResultDashboard/app/models/base.py", line 48, in <module>    db = SQLAlchemy(query_class=Query)TypeError: __init__() got an unexpected keyword argument 'query_class'
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JERRY

TA贡献1条经验 获得超0个赞

为什么会报这个错 有没有大佬帮我看下啊

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反对 回复 2019-05-23
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