From dda3e6c1d369394343cff224887d2f88f6a41cb2 Mon Sep 17 00:00:00 2001
From: zhentao zhu <480694856@qq.com>
Date: Fri, 30 Jan 2026 15:57:32 +0800
Subject: [PATCH] Add support for string array in multipart fields

---
 playwright/_impl/_fetch.py         | 9 +++++++++
 playwright/_impl/_helper.py        | 3 +++
 playwright/async_api/_generated.py | 4 +---
 3 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/playwright/_impl/_fetch.py b/playwright/_impl/_fetch.py
index 50bf4ad4a..bc08c4498 100644
--- a/playwright/_impl/_fetch.py
+++ b/playwright/_impl/_fetch.py
@@ -40,6 +40,7 @@
     async_readfile,
     async_writefile,
     is_file_payload,
+    is_file_array_payload,
     locals_to_params,
     object_to_array,
     to_impl,
@@ -394,6 +395,14 @@ async def _inner_fetch(
                     multipart_data.append(
                         FormField(name=name, file=file_payload_to_json(payload))
                     )
+                elif is_file_array_payload(value):
+                    for item in value:
+                        payload = cast(FilePayload, item)
+                        assert isinstance(payload["buffer"], bytes)
+                        multipart_data.append(FormField(name=name, file=file_payload_to_json(payload)))
+                elif isinstance(value, list):
+                    for item in value:
+                        multipart_data.append(FormField(name=name, value=str(item)))
                 elif isinstance(value, str):
                     multipart_data.append(FormField(name=name, value=value))
         if (
diff --git a/playwright/_impl/_helper.py b/playwright/_impl/_helper.py
index 1d7e4f67b..6ca9f7d30 100644
--- a/playwright/_impl/_helper.py
+++ b/playwright/_impl/_helper.py
@@ -561,6 +561,9 @@ def is_file_payload(value: Optional[Any]) -> bool:
         and "buffer" in value
     )
 
+def is_file_array_payload(value: Optional[Any]) -> bool:
+    return isinstance(value, list) and all(is_file_payload(x) for x in value)
+
 
 TEXTUAL_MIME_TYPE = re.compile(
     r"^(text\/.*?|application\/(json|(x-)?javascript|xml.*?|ecmascript|graphql|x-www-form-urlencoded)|image\/svg(\+xml)?|application\/.*?(\+json|\+xml))(;\s*charset=.*)?$"
diff --git a/playwright/async_api/_generated.py b/playwright/async_api/_generated.py
index 469046b21..d7d99e006 100644
--- a/playwright/async_api/_generated.py
+++ b/playwright/async_api/_generated.py
@@ -18229,9 +18229,7 @@ async def delete(
         headers: typing.Optional[typing.Dict[str, str]] = None,
         data: typing.Optional[typing.Union[typing.Any, str, bytes]] = None,
         form: typing.Optional[typing.Dict[str, typing.Union[str, float, bool]]] = None,
-        multipart: typing.Optional[
-            typing.Dict[str, typing.Union[bytes, bool, float, str, FilePayload]]
-        ] = None,
+        multipart: typing.Dict[str,typing.Union[bytes,bool,float,str,FilePayload,typing.List[typing.Union[str, FilePayload]]]] = None,
         timeout: typing.Optional[float] = None,
         fail_on_status_code: typing.Optional[bool] = None,
         ignore_https_errors: typing.Optional[bool] = None,