一切都要从这货提供的数据集有问题开始，那么这里是SAGAN原作者提供的GitHub仓库地址
由于，这货让咱下载数据集的时候
当你开始尝试打开这两个链接
两个box界面都会显示：
那在网上看了一圈，这俩数据集都有点大(CelebA几十寄,LSUN完整版直接媲美ImageNet,一百多寄)，那，，，
好在注意到这货用的LSUN数据集只是一部分
church_outdoor_train_lmdb
这个在官网看只有2G
那事情就简单了，下载LSUN的
但是它这玩意的压缩包里储存的都是MDB格式，这里在网页里下载了，后面如果想看还是需要用到它提供的代码
那么直接进入它提供的GitHub仓库 克隆解压然后根据readme的提示运行下载代码（如果在网页下载了，那这里就不用再下了）
python download.py -c church_outdoor
下载完之后
然后直接解压到同名目录下，基本上是
- church_outdoor_train_lmdb
- data.mdb
- lock.mdb
顺带一提，在解包代码里，建议把这个mapsize改小些，默认1T，蛋是我的硬盘太小了，直接3G空间应该是足够用了（后面测试不改也不报错了，很怪）
然后根据提示执行解包代码（不建议，慢，而且费劲，）
python data.py export church_outdoor_train_lmdb --out_dir data或者直接使用view查看
python data.py view church_outdoor_train_lmdb那么数据集相关的说的差不多了，可以看SAGAN了
PS：对于使用，pytorch直接提供了对应的工具
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