Issue #19543: Emit deprecation warning for known non-text encodings.

Backported issues #19619: encode() and decode() methods and constructors
of str, unicode and bytearray classes now emit deprecation warning for known
non-text encodings when Python is ran with the -3 option.

Backported issues #20404: io.TextIOWrapper (and hence io.open()) now uses the
internal codec marking system added to emit deprecation warning for known non-text
encodings at stream construction time when Python is ran with the -3 option.

1 files changed, 2 insertions, 2 deletions

diff --git a/Objects/stringobject.c b/Objects/stringobject.c
index 46f46db..c1e12a7 100644
--- a/Objects/stringobject.c
+++ b/Objects/stringobject.c
@@ -449,7 +449,7 @@ PyObject *PyString_AsDecodedObject(PyObject *str,
     }
 
     /* Decode via the codec registry */
-    v = PyCodec_Decode(str, encoding, errors);
+    v = _PyCodec_DecodeText(str, encoding, errors);
     if (v == NULL)
         goto onError;
 
@@ -529,7 +529,7 @@ PyObject *PyString_AsEncodedObject(PyObject *str,
     }
 
     /* Encode via the codec registry */
-    v = PyCodec_Encode(str, encoding, errors);
+    v = _PyCodec_EncodeText(str, encoding, errors);
     if (v == NULL)
         goto onError;