The following demonstrates a python3 sqlalchemy bug where an association proxy does not allow assignment in place without specifying the start index. It gives a "TypeError: list indices must be integers, not NoneType" error. It fails on sqlalchemy 0.9.3, but python2 seems to have no problem.
from sqlalchemy import * from sqlalchemy.orm import * from sqlalchemy.ext.declarative import * from sqlalchemy.ext.associationproxy import association_proxy Base = declarative_base() def build(value): return Table1(name=value) class Table1(Base): __tablename__ = 'table1' id = Column(Integer, primary_key=True) name = Column(String(100)) fk = Column(Integer, ForeignKey('table2.id')) class Table2(Base): __tablename__ = 'table2' id = Column(Integer, primary_key=True) t1s = relationship('Table1') t1s_proxy = association_proxy('t1s', 'name', creator=build) t2 = Table2() t2.t1s.append(Table1(name='test')) # fails t2.t1s_proxy[:] = ['test'] # works t2.t1s_proxy[0:] = ['test'] -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at http://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/groups/opt_out.