gdbm_tolernce

gdbm.py

# skip check code that all files are exists, origin, even_snapshot, odd_snapshot
# And skip declaring file name

if not origin_exist:
    db = dbm.open(origin, 'nx') # For extension format
    db.gdbm_failure_atomic(even_snapshot, odd_snapshot) # For snapshot declaration
else:
    latest_snapshot = dbm.gdbm_latest_snapshot(even_snapshot odd_snapshot)   
    db = dbm.open(latest_snapshot, 'r') # Open the latest valid snapshot

for k, v in zip('abcdef', 'ghijkl'):
    db[k] = v
db.sync()
db.close()