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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def ingest_to_model(file, model, engine=None):
 """Load data from a CSV file handle into storage for a SQLAlchemy model class. """

    if engine is None:
        engine = db.engine
    reader = csv.reader(file)
    columns = tuple('"{}"'.format(n) for n in next(reader))
    postgres_copy.copy_from(
        file, model, engine, columns=columns, format="csv", HEADER=False
    )
    fix_autoincrement(model.__table__.name)