safe_open handle out of scope issue.

[diaoenmao]

System Info

I encounter a similar issue of #164. I try to remove the storage from drive after I loaded. It will give me a permission error on windows unless I add a del to delete the reference to the memory.

tensor = load_tensor(path)[name]
del tensor
os.remove(path) # will work, without del tensor won't work

If I use that tensor somewhere else, deleting the original pointer won't help. It seems like as long as the loaded memory is allocated, the original file on the drive cannot be modified (deleted or overwritten). I believe this should be mentioned somewhere in the documentation.

tensor = load_tensor(path)[name]
a = nn.Parameter(tensor)
del tensor
os.remove(path) # won't work

Information

• The official example scripts
• My own modified scripts

Reproduction

tensor = load_tensor(path)[name]
del tensor
os.remove(path) # will work, without del tensor won't work

tensor = load_tensor(path)[name]
a = nn.Parameter(tensor)
del tensor
os.remove(path) # won't work

Expected behavior

Discussion on documentation