Data Persistence

The modules described in this chapter support storing Python data in a persistent form on disk. The :mod:`pickle` and :mod:`marshal` modules can turn many Python data types into a stream of bytes and then recreate the objects from the bytes. The various DBM-related modules support a family of hash-based file formats that store a mapping of strings to other strings. The :mod:`bsddb` module also provides such disk-based string-to-string mappings based on hashing, and also supports B-Tree and record-based formats.

The list of modules described in this chapter is:

.. toctree::

   pickle.rst
   copy_reg.rst
   shelve.rst
   marshal.rst
   anydbm.rst
   whichdb.rst
   dbm.rst
   gdbm.rst
   dbhash.rst
   bsddb.rst
   dumbdbm.rst
   sqlite3.rst