Issue #28410: Added _PyErr_FormatFromCause() -- the helper for raising
new exception with setting current exception as __cause__.

_PyErr_FormatFromCause(exception, format, args...) is equivalent to Python

    raise exception(format % args) from sys.exc_info()[1]
diff --git a/Lib/test/test_capi.py b/Lib/test/test_capi.py
index d4faeb3..6c3625d 100644
--- a/Lib/test/test_capi.py
+++ b/Lib/test/test_capi.py
@@ -222,8 +222,8 @@
                                 br'result with an error set\n'
                              br'ValueError\n'
                              br'\n'
-                             br'During handling of the above exception, '
-                                br'another exception occurred:\n'
+                             br'The above exception was the direct cause '
+                                br'of the following exception:\n'
                              br'\n'
                              br'SystemError: <built-in '
                                 br'function return_result_with_error> '