I'm trying to build a relationship in a model where the primaryjoin will use the @.expression (hybrid expression) attribute of the remote class. The code looks like this: class LCProduct(db.Model): __tablename__ = 'lcproduct' product_id = Column(Integer, Sequence('lcproductcategory_seq'), primary_key=True) label = Co
我试图在primaryjoin将使用远程类的@ .expression（混合表达式）属性的模型中建立关系。 代码如下所示： class LCProduct(db.Model): __tablename__ = 'lcproduct' product_id = Column(Integer, Sequence('lcproductcategory_seq'), primary_key=True) label = Column(String) category = relationship('LCCategory', primaryjoin
repr() : evaluatable string representation of an object (can "eval()" it, meaning it is a string representation that evaluates to a Python object) In other words: >>> x = 'foo' >>> repr(x) "'foo'" Questions: Why do I get the double quotes when I do repr(x) ? (I don't get them when I do str(x) ) Why do I get 'foo' when I do eval("'foo'&
repr() ：可评估的对象的字符串表示形式（可以是“eval（）”it，表示它是一个字符串表示，其计算结果为Python对象） 换一种说法： >>> x = 'foo' >>> repr(x) "'foo'" 问题： 为什么我在做repr(x)时会得到双引号？ （当我执行str(x)时，我不会得到它们） 当我做eval("'foo'")而不是x这个对象时，为什么我会得到'foo' ？ >>> x = 'foo' >>> x 'foo' 所
It looks like SQLAlchemy defaults to creating VARCHAR2 columns as CHAR . How can I have it create with BYTE instead? from sqlalchemy import MetaData, Column, String from sqlalchemy.ext.declarative import declarative_base metadata = MetaData() Base = declarative_base(metadata=metadata) class Foo(Base): __tablename__ = 'foo' name = Column(String(10), primary_key=True) Foo.__table__.cr
它看起来像SQLAlchemy默认创建VARCHAR2列为CHAR 。 我怎么能用BYTE创建它呢？ from sqlalchemy import MetaData, Column, String from sqlalchemy.ext.declarative import declarative_base metadata = MetaData() Base = declarative_base(metadata=metadata) class Foo(Base): __tablename__ = 'foo' name = Column(String(10), primary_key=True) Foo.__table__.create(bind=engine) 这将创建下表： CREATE T
class Foo(Base): __tablename__ = 'foo' id = Column(Integer, Sequence('foo_id_seq'), primary_key=True) bar = Column(String(10)) 是否可以反映Foo.c序列foo_id_seq的名称？ 如果通过Foo.c你的意思是Foo的一个实例，那么： f = Foo() print(f.__table__.c['id'].default.name)
class Foo(Base): __tablename__ = 'foo' id = Column(Integer, Sequence('foo_id_seq'), primary_key=True) bar = Column(String(10)) 是否可以反映Foo.c序列foo_id_seq的名称？ 如果通过Foo.c你的意思是Foo的一个实例，那么： f = Foo() print(f.__table__.c['id'].default.name)
i'm using sqlalchemy + alembic + Flask and i can't map circular classes. apps/users/models.py: class User(Base): __tablename__ = 'users' id = Column(Integer, primary_key=True) email = Column(String) password = Column(String) session = relationship("Session", back_populates='user', cascade='all,delete', lazy='dynamic') notes = relationship('Note2User', back_pop
我正在使用sqlalchemy + alembic + Flask，我无法映射循环类。 应用/用户/ models.py： class User(Base): __tablename__ = 'users' id = Column(Integer, primary_key=True) email = Column(String) password = Column(String) session = relationship("Session", back_populates='user', cascade='all,delete', lazy='dynamic') notes = relationship('Note2User', back_populates='user', cascad
I am using the concrete table inheritance with SQLAlchemy. In declartive style model class, I have configured it successfully. My code just like: class Entry(AbstractConcreteBase, db.Model): """Base Class of Entry.""" id = db.Column(db.Integer, primary_key=True, nullable=False) created = db.Column(db.DateTime, nullable=False) post_id = declared_attr(lambda c: db.Column(db.For
我正在使用SQLAlchemy的具体表继承。 在声明式样模型类中，我已成功配置它。 我的代码就像： class Entry(AbstractConcreteBase, db.Model): """Base Class of Entry.""" id = db.Column(db.Integer, primary_key=True, nullable=False) created = db.Column(db.DateTime, nullable=False) post_id = declared_attr(lambda c: db.Column(db.ForeignKey("post.id"))) post = declared_attr(lambda c: db.
I was following the guide here: http://www.sqlalchemy.org/docs/orm/examples.html?highlight=versioning#versioned-objects and have come across an issue. I have defined my relationships like: generic_ticker = relation('MyClass', backref=backref("stuffs")) with strings so it doesn't care about the import order of my model modules. This all works fine normally, but when I use the versionin
我在这里遵循指南： http://www.sqlalchemy.org/docs/orm/examples.html?highlight=versioning#versioned-objects 并遇到了一个问题。 我定义了我的关系，如： generic_ticker = relation('MyClass', backref=backref("stuffs")) 字符串，所以它不关心我的模型模块的进口顺序。 这一切正常工作正常，但是当我使用版本元我得到以下错误： sqlalchemy.exc.InvalidRequestError：初始化映射器Mapper | MyClass |时，表达
I have some problems while trying to import some module (compiled .pyc) in my program. I know that it compiled in Python 2.6.6 (r266:84297), I have installed the same version, but had an error "bad magic number" while trying to import it :( Does anybody know what I did wrong? Or maybe it's possible to change magic number in .pyc module? As the answer linked by Matthew explains
尝试在程序中导入某个模块（编译.pyc）时遇到一些问题。 我知道它在Python 2.6.6（r266：84297）中编译，我已经安装了相同的版本，但在尝试导入时出现错误“错误的幻数”:( 有人知道我做错了什么吗？ 或者也许可以在.pyc模块中更改幻数？ 正如Matthew所解释的答案，你的问题几乎肯定是由于编译和加载模块时使用了不同版本的Python。 你可以像这样确定幻数： with open('pyuca.pyc', 'rb') as f: print struct.unpack('&
I started using django-social-auth which looks great, i want to setup a tiny twitter app and just need the twitter connect. I followed the guidelines and examples. The twitter connect looks like it's working, i am redirected to twitter authentication but when returning back to my callbackUrl i get always redirected to the LOGIN_URL_ERROR, i have no error messages. I tried adding django log
我开始使用django-social-auth，看起来不错，我想设置一个小小的twitter应用程序，只需要twitter连接。 我遵循了指导方针和示例。 叽叽喳喳连接看起来像它的工作，我重定向到Twitter身份验证，但当返回到我的callbackUrl我总是重定向到LOGIN_URL_ERROR，我没有错误消息。 我试着添加Django日志仍然没有显示错误。 示例视图中使用的消息模块提供给我：“对不起，但有些错误使您无法登录，请重试” 我目前正在测试本地主机，所
i tried to install django social auth, which is located on https://github.com/omab/django-social-auth how can i associate a regular registration and social auth for example a user doesn't have any account in twitter or facebook etc .. how can i associate django.contrib.auth with social auth by giving him the choice of choosing either to register normal registration or using his account in t
我试图安装位于https://github.com/omab/django-social-auth上的django社交身份验证，我如何关联常规注册和社交身份验证，例如用户在Twitter中没有任何帐户或facebook等。我如何将django.contrib.auth与社交认证相关联 通过给他选择注册正常注册或在Twitter或Facebook上使用他的帐户 django-social-auth提供了与特定后端（例如Google，Facebook或Twitter）进行身份验证的视图。 查看在social_auth的URLconf中定义的代码：ht