event.listen forces compile !!

ugh

from sqlalchemy import *
from sqlalchemy.orm import *
from sqlalchemy.ext.declarative import declarative_base

Base= declarative_base()

class SomeObject(Base):
    __tablename__ = 'foo'
    id = Column(Integer, primary_key=True)

    foobars = relationship("FooBar")


from sqlalchemy import event

@event.listens_for(SomeObject, "before_insert")
def foo(mapper, conn, inst):
    print "hi"

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