Python: module gdbm

gdbm

index
/usr/local/lib/python2.4/lib-dynload/gdbm.so
Module Docs

This module provides an interface to the GNU DBM (GDBM) library. This module is quite similar to the dbm module, but uses GDBM instead to provide some additional functionality. Please note that the file formats created by GDBM and dbm are incompatible. GDBM objects behave like mappings (dictionaries), except that keys and values are always strings. Printing a GDBM object doesn't print the keys and values, and the items() and values() methods are not supported.

Classes

exceptions.Exception

error

class error(exceptions.Exception)

Methods inherited from exceptions.Exception:

__getitem__(...)

__init__(...)

__str__(...)

Functions

open(...)
open(filename, [flags, [mode]]) -> dbm_object Open a dbm database and return a dbm object. The filename argument is the name of the database file. The optional flags argument can be 'r' (to open an existing database for reading only -- default), 'w' (to open an existing database for reading and writing), 'c' (which creates the database if it doesn't exist), or 'n' (which always creates a new empty database). Some versions of gdbm support additional flags which must be appended to one of the flags described above. The module constant 'open_flags' is a string of valid additional flags. The 'f' flag opens the database in fast mode; altered data will not automatically be written to the disk after every change. This results in faster writes to the database, but may result in an inconsistent database if the program crashes while the database is still open. Use the sync() method to force any unwritten data to be written to the disk. The 's' flag causes all database operations to be synchronized to disk. The 'u' flag disables locking of the database file. The optional mode argument is the Unix mode of the file, used only when the database has to be created. It defaults to octal 0666.

Data

open_flags = 'rwcnfsu'

Functions
		open(...) open(filename, [flags, [mode]]) -> dbm_object Open a dbm database and return a dbm object. The filename argument is the name of the database file. The optional flags argument can be 'r' (to open an existing database for reading only -- default), 'w' (to open an existing database for reading and writing), 'c' (which creates the database if it doesn't exist), or 'n' (which always creates a new empty database). Some versions of gdbm support additional flags which must be appended to one of the flags described above. The module constant 'open_flags' is a string of valid additional flags. The 'f' flag opens the database in fast mode; altered data will not automatically be written to the disk after every change. This results in faster writes to the database, but may result in an inconsistent database if the program crashes while the database is still open. Use the sync() method to force any unwritten data to be written to the disk. The 's' flag causes all database operations to be synchronized to disk. The 'u' flag disables locking of the database file. The optional mode argument is the Unix mode of the file, used only when the database has to be created. It defaults to octal 0666.