django1/django/contrib/sessions/exceptions.py

from django.core.exceptions import BadRequest, SuspiciousOperation


class InvalidSessionKey(SuspiciousOperation):
    """Invalid characters in session key"""
    pass


class SuspiciousSession(SuspiciousOperation):
    """The session may be tampered with"""
    pass


class SessionInterrupted(BadRequest):
    """The session was interrupted."""
    pass