Initial commit. Basic models mostly done.

venv/lib/python3.8/site-packages/django/contrib/sessions/exceptions.py

@@ -0,0 +1,11 @@
+from django.core.exceptions import SuspiciousOperation
+
+
+class InvalidSessionKey(SuspiciousOperation):
+    """Invalid characters in session key"""
+    pass
+
+
+class SuspiciousSession(SuspiciousOperation):
+    """The session may be tampered with"""
+    pass