【报错】sqlalchemy.exc.ArgumentError: Mapper mapped class Role→role could not assemble any primary key

出错代码：

#生成抽象模型，不会创建模型对应的表,减少重复代码
class BaseModel(db.Model):
    __abstract__ = True
    id = db.Column(db.Integer, pramary_key=True, autoincrement=True)
    name = db.Column(db.String(20), unique=True, nullable=False)


class Role(BaseModel):
    __tablename__ = 'role'
    id = db.Column(db.Integer, pramary_key=True, autoincrement=True)
    name = db.Column(db.String(20), unique=True, nullable=False)

class Qx(BaseModel):
    __tablename__ = 'qx'
    id = db.Column(db.Integer, pramary_key=True, autoincrement=True)
    name = db.Column(db.String(20), unique=True, nullable=False)

报错：sqlalchemy.exc.ArgumentError: Mapper mapped class Role->role could not assemble any primary key columns for mapped table 'role'

原因：primary_key写成了pramary_key