Moved Proposal model from wiki to source code and updated ProposalModel wiki page.
Patch by: Pawel Solyga
Review by: Todd Larsen
Review issue: 362
Review URL: http://codereviews.googleopensourceprograms.com/362
"""Error types for dispatcher mechanism
"""
class DispatcherError(Exception):
"""Base class for all Dispatcher errors"""
class DispatcherKeyError(KeyError, DispatcherError):
"""Error raised when unknown (sender,signal) set specified"""
class DispatcherTypeError(TypeError, DispatcherError):
"""Error raised when inappropriate signal-type specified (None)"""