不幸的是-当您将batch_size设置为50时，如果只有5个示例，则生成器将每批仅返回5个示例(尽管batch_size).因此，它不会将您的批次扩展到50.

Unfortunately - when you set the batch_size to 50 when you have only 5 examples will make your generator to return only 5 examples in each batch (despite the batch_size). So it will not extend your batch to 50.