Django-1.2.1/django/contrib/gis/geos/error.py

   1 """
   2  This module houses the GEOS exceptions, specifically, GEOSException and
   3  GEOSGeometryIndexError.
   4 """
   5
   6 class GEOSException(Exception):
   7     "The base GEOS exception, indicates a GEOS-related error."
   8     pass
   9
  10 class GEOSIndexError(GEOSException, KeyError):
  11     """
  12     This exception is raised when an invalid index is encountered, and has
  13     the 'silent_variable_feature' attribute set to true.  This ensures that
  14     django's templates proceed to use the next lookup type gracefully when
  15     an Exception is raised.  Fixes ticket #4740.
  16     """
  17     # "If, during the method lookup, a method raises an exception, the exception
  18     #  will be propagated, unless the exception has an attribute
  19     #  `silent_variable_failure` whose value is True." -- Django template docs.
  20     silent_variable_failure = True