leveldb.LevelDBError: IO error: lock train_weight/LOCK: already held by process

[Paper99]

Thanks for your code.
I followed your tips in Readme.md. And I also run dec.py by your dec caffe.But it occured this error. How can I solve this?

[GeKeShi]

the same problem，and my python-leveldb version is 0.194

[Vitoom]

just add "del net" in code will free the level db