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Changing Objects in a Shelve File

import shelve newtimes = ["110pm", "220pm", "300pm", "445pm"] db = shelve.open("shelved.dat", "w", writeback=1) for k in db.keys():     obj = db[k]     print "%s: %s" % (k, obj) flights = db['flights'] times = db['times'] flights['1145'] = "Dallas" flights['1709'] = "Orlando" db['times'] = newtimes db['oldtimes'] = times db.sync() for k in db.keys():     obj = db[k]     print "%s: %s" % (k, obj) db.close()