From 64f88569243c38847ce1a6b2d9768c09c9055ad3 Mon Sep 17 00:00:00 2001
From: Konstantin Zangerle <konstantin.zangerle@kit.edu>
Date: Wed, 4 Jun 2025 15:52:24 +0200
Subject: [PATCH] make compatible with 3.8

---
 fastapi/openapi/utils.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/fastapi/openapi/utils.py b/fastapi/openapi/utils.py
index c2cb8b5df..be23ba346 100644
--- a/fastapi/openapi/utils.py
+++ b/fastapi/openapi/utils.py
@@ -100,7 +100,7 @@ def _get_openapi_operation_parameters(
     field_mapping: Dict[
         Tuple[ModelField, Literal["validation", "serialization"]], JsonSchemaValue
     ],
-    field_docstring: Dict[str, str] | None = None,
+    field_docstring: Optional[Dict[str, str]] = None,
     separate_input_output_schemas: bool = True,
 ) -> List[Dict[str, Any]]:
     parameters = []
@@ -240,9 +240,12 @@ def get_openapi_operation_metadata(
         operation["description"] = "\n\n".join(
             [i.value for i in route.parsed_docstring if i.kind == "text"]
         )
+        operation["description"] = operation["description"].split("\f")[0].strip()
+        if not operation["description"]:
+            del operation["description"]
     if route.description:
         operation["description"] = route.description
-    operation["description"] = operation["description"].split("\f")[0].strip()
+        operation["description"] = operation["description"].split("\f")[0].strip()
 
     operation_id = route.operation_id or route.unique_id
     if operation_id in operation_ids: