Guard ctypes complex type codes

Author: JelleZijlstra

stdlib/ctypes/__init__.pyi

@@ -333,17 +333,26 @@ if sys.version_info >= (3, 14) and sys.platform != "win32":
     # https://github.com/python/cpython/issues/148464
 
     class c_double_complex(_SimpleCData[complex]):
-        _type_: ClassVar[Literal["Zd"]]
+        if sys.version_info >= (3, 15):
+            _type_: ClassVar[Literal["Zd"]]
+        else:
+            _type_: ClassVar[Literal["D"]]
         __ctype_be__: ClassVar[type[Self]]
         __ctype_le__: ClassVar[type[Self]]
 
     class c_float_complex(_SimpleCData[complex]):
-        _type_: ClassVar[Literal["Zf"]]
+        if sys.version_info >= (3, 15):
+            _type_: ClassVar[Literal["Zf"]]
+        else:
+            _type_: ClassVar[Literal["F"]]
         __ctype_be__: ClassVar[type[Self]]
         __ctype_le__: ClassVar[type[Self]]
 
     class c_longdouble_complex(_SimpleCData[complex]):
-        _type_: ClassVar[Literal["Zg"]]
+        if sys.version_info >= (3, 15):
+            _type_: ClassVar[Literal["Zg"]]
+        else:
+            _type_: ClassVar[Literal["G"]]
 
 class c_char(_SimpleCData[bytes]):
     _type_: ClassVar[Literal["c"]]