Shelves

# a shelf is a (g)dbm files that stores pickled Python objects

import shelve

class UserData: ...

key = ...username, or session key, or whatever...

db = shelve.open("DATABASE", "w") # open for reading+writing

if db.has_key(key):

data = db[key] # an object!

else:

data = UserData(key) # create a new instance

data.update(form)

db[key] = data

db.close()

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