1 files changed, 4 insertions, 4 deletions
diff --git a/Modules/_io/_iomodule.c b/Modules/_io/_iomodule.c
index 162b288..b4cc894 100644
--- a/Modules/_io/_iomodule.c
+++ b/Modules/_io/_iomodule.c
@@ -103,9 +103,9 @@ _io.open
     file: object
     mode: str = "r"
     buffering: int = -1
-    encoding: str(accept={str, NoneType}) = NULL
-    errors: str(accept={str, NoneType}) = NULL
-    newline: str(accept={str, NoneType}) = NULL
+    encoding: str(accept={str, NoneType}) = None
+    errors: str(accept={str, NoneType}) = None
+    newline: str(accept={str, NoneType}) = None
     closefd: bool(accept={int}) = True
     opener: object = None
 
@@ -233,7 +233,7 @@ static PyObject *
 _io_open_impl(PyObject *module, PyObject *file, const char *mode,
               int buffering, const char *encoding, const char *errors,
               const char *newline, int closefd, PyObject *opener)
-/*[clinic end generated code: output=aefafc4ce2b46dc0 input=03da2940c8a65871]*/
+/*[clinic end generated code: output=aefafc4ce2b46dc0 input=7295902222e6b311]*/
 {
     unsigned i;