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venv/Lib/site-packages/django/contrib/sites/management.py

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+"""
+Creates the default Site object.
+"""
+
+from django.apps import apps as global_apps
+from django.conf import settings
+from django.core.management.color import no_style
+from django.db import DEFAULT_DB_ALIAS, connections, router
+
+
+def create_default_site(app_config, verbosity=2, interactive=True, using=DEFAULT_DB_ALIAS, apps=global_apps, **kwargs):
+    try:
+        Site = apps.get_model('sites', 'Site')
+    except LookupError:
+        return
+
+    if not router.allow_migrate_model(using, Site):
+        return
+
+    if not Site.objects.using(using).exists():
+        # The default settings set SITE_ID = 1, and some tests in Django's test
+        # suite rely on this value. However, if database sequences are reused
+        # (e.g. in the test suite after flush/syncdb), it isn't guaranteed that
+        # the next id will be 1, so we coerce it. See #15573 and #16353. This
+        # can also crop up outside of tests - see #15346.
+        if verbosity >= 2:
+            print("Creating example.com Site object")
+        Site(pk=getattr(settings, 'SITE_ID', 1), domain="example.com", name="example.com").save(using=using)
+
+        # We set an explicit pk instead of relying on auto-incrementation,
+        # so we need to reset the database sequence. See #17415.
+        sequence_sql = connections[using].ops.sequence_reset_sql(no_style(), [Site])
+        if sequence_sql:
+            if verbosity >= 2:
+                print("Resetting sequence")
+            with connections[using].cursor() as cursor:
+                for command in sequence_sql:
+                    cursor.execute(command)