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from django.core.exceptions import ImproperlyConfigured
class TaskException(Exception):
"""Base class for task-related exceptions. Do not raise directly."""
class InvalidTask(TaskException):
"""The provided Task is invalid."""
class InvalidTaskBackend(ImproperlyConfigured):
"""The provided Task backend is invalid."""
class TaskResultDoesNotExist(TaskException):
"""The requested TaskResult does not exist."""
class TaskResultMismatch(TaskException):
"""The requested TaskResult is invalid."""
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