dumbdbm

A dumb and slow but simple dbm clone.

For database spam, spam.dir contains the index (a text file), spam.bak may contain a backup of the index (also a text file), while spam.dat contains the data (a binary file).

XXX TO DO:

  • seems to contain a bug when updating...
  • reclaim free space (currently, space once occupied by deleted or expanded

items is never reused)

  • support concurrent access (currently, if two processes take turns making

updates, they can mess up the index)

  • support efficient access to large databases (currently, the whole index

is read when the database is opened, and some updates rewrite the whole index)

  • support opening for read-only (flag = ‘m’)

Functions

open(file[, flag, mode]) Open the database file, filename, and return corresponding object.

Exceptions

error alias of IOError