# -*- coding: utf-8 -*-
from typing import Optional
__all__ = ['KilledError', 'UnsuccessfulResult', 'InvalidStateError', 'PersistenceError', 'ClosedError']
[docs]class KilledError(Exception):
"""The process was killed."""
[docs]class InvalidStateError(Exception):
"""
Raised when an operation is attempted that requires the process to be in a state
that is different from the current state
"""
[docs]class UnsuccessfulResult:
"""The result of the process was unsuccessful"""
def __init__(self, result: Optional[int] = None):
"""Initialise.
:param result: the exit code of the process
"""
self.result = result
[docs]class PersistenceError(Exception):
"""Raised when there is a problem persisting the process"""
[docs]class ClosedError(Exception):
"""Raised when an mutable operation is attempted on a closed process"""
