|  | 
 | .. _persistence: | 
 |  | 
 | **************** | 
 | 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 list of modules described in this chapter is: | 
 |  | 
 |  | 
 | .. toctree:: | 
 |  | 
 |    pickle.rst | 
 |    copyreg.rst | 
 |    shelve.rst | 
 |    marshal.rst | 
 |    dbm.rst | 
 |    sqlite3.rst |