cpython/Lib/dbhash.py

"""Provide a (g)dbm-compatible interface to bsdhash.hashopen."""

import sys
try:
    import bsddb
except ImportError:
    # prevent a second import of this module from spuriously succeeding
    del sys.modules[__name__]
    raise

__all__ = ["error","open"]

error = bsddb.error                     # Exported for anydbm

def open(file, flag = 'r', mode=0666):
    return bsddb.hashopen(file, flag, mode)
backward compatible interface for bsddb 1996-01-25 18:33:39 +00:00			`"""Provide a (g)dbm-compatible interface to bsdhash.hashopen."""`

fail more completely by deleting dbhash from sys.modules if bsddb can't be loaded - prevents second import later from succeeding spuriously - mostly of use in regression tests where the module might get imported more than once 2001-01-25 13:47:00 +00:00			`import sys`
			`try:`
			`import bsddb`
			`except ImportError:`
			`# prevent a second import of this module from spuriously succeeding`
			`del sys.modules[__name__]`
			`raise`
backward compatible interface for bsddb 1996-01-25 18:33:39 +00:00
added __all__ lists to a number of Python modules added test script and expected output file as well this closes patch 103297. __all__ attributes will be added to other modules without first submitting a patch, just adding the necessary line to the test script to verify more-or-less correct implementation. 2001-01-20 19:54:20 +00:00			`__all__ = ["error","open"]`

Clarify why we define error. Suggested by Andrew Dalke. 1999-05-03 18:09:26 +00:00			`error = bsddb.error # Exported for anydbm`
backward compatible interface for bsddb 1996-01-25 18:33:39 +00:00
Fix bug #422702: Make flag argument to open optional, and document it that way. 2001-06-05 05:33:19 +00:00			`def open(file, flag = 'r', mode=0666):`
backward compatible interface for bsddb 1996-01-25 18:33:39 +00:00			`return bsddb.hashopen(file, flag, mode)`