saving dependency work

lib/python3.9/site-packages/django/contrib/admin/forms.py

@@ -0,0 +1,31 @@
+from django.contrib.auth.forms import AuthenticationForm, PasswordChangeForm
+from django.core.exceptions import ValidationError
+from django.utils.translation import gettext_lazy as _
+
+
+class AdminAuthenticationForm(AuthenticationForm):
+    """
+    A custom authentication form used in the admin app.
+    """
+
+    error_messages = {
+        **AuthenticationForm.error_messages,
+        "invalid_login": _(
+            "Please enter the correct %(username)s and password for a staff "
+            "account. Note that both fields may be case-sensitive."
+        ),
+    }
+    required_css_class = "required"
+
+    def confirm_login_allowed(self, user):
+        super().confirm_login_allowed(user)
+        if not user.is_staff:
+            raise ValidationError(
+                self.error_messages["invalid_login"],
+                code="invalid_login",
+                params={"username": self.username_field.verbose_name},
+            )
+
+
+class AdminPasswordChangeForm(PasswordChangeForm):
+    required_css_class = "required"