i'm trying to generate a list of non-deffered columns from an object
referencing this example:
class Book(Base):
__tablename__ = 'book'
book_id = Column(Integer, primary_key=True)
title = Column(String(200), nullable=False)
summary = Column(String(2000))
excerpt = deferred(Column(Text))
photo = deferred(Column(Binary))
how can I tell , when dealing with an instance of `Book()`, which columns
are deferred or not ?
i tried inspecting virtually everything in:
class_mapper(Book))
and looked over these multiple times:
class_mapper(Book).mapped_table)
class_mapper(Book).mapped_table.c)
but couldn't seem to find anything that works.
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