Issue #24824: Signatures of codecs.encode() and codecs.decode() now are

compatible with pydoc.

Misc/NEWS

@@ -15,6 +15,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #24824: Signatures of codecs.encode() and codecs.decode() now are
+  compatible with pydoc.
+
 - Issue #24634: Importing uuid should not try to load libc on Windows
 
 - Issue #24798: _msvccompiler.py doesn't properly support manifests

Modules/_codecsmodule.c

@@ -91,12 +91,12 @@ _codecs_lookup_impl(PyModuleDef *module, const char *encoding)
 /*[clinic input]
 _codecs.encode
     obj: object
-    encoding: str(c_default="NULL") = sys.getdefaultencoding()
+    encoding: str(c_default="NULL") = "utf-8"
     errors: str(c_default="NULL") = "strict"
 
 Encodes obj using the codec registered for encoding.
 
-encoding defaults to the default encoding.  errors may be given to set a
+The default encoding is 'utf-8'.  errors may be given to set a
 different error handling scheme.  Default is 'strict' meaning that encoding
 errors raise a ValueError.  Other possible values are 'ignore', 'replace'
 and 'backslashreplace' as well as any other name registered with
@@ -106,7 +106,7 @@ codecs.register_error that can handle ValueErrors.
 static PyObject *
 _codecs_encode_impl(PyModuleDef *module, PyObject *obj, const char *encoding,
                     const char *errors)
-/*[clinic end generated code: output=5c073f62249c8d7c input=2440d769df020a0e]*/
+/*[clinic end generated code: output=5c073f62249c8d7c input=cd5b685040ff61f0]*/
 {
     if (encoding == NULL)
         encoding = PyUnicode_GetDefaultEncoding();
@@ -118,12 +118,12 @@ _codecs_encode_impl(PyModuleDef *module, PyObject *obj, const char *encoding,
 /*[clinic input]
 _codecs.decode
     obj: object
-    encoding: str(c_default="NULL") = sys.getdefaultencoding()
+    encoding: str(c_default="NULL") = "utf-8"
     errors: str(c_default="NULL") = "strict"
 
 Decodes obj using the codec registered for encoding.
 
-encoding defaults to the default encoding.  errors may be given to set a
+Default encoding is 'utf-8'.  errors may be given to set a
 different error handling scheme.  Default is 'strict' meaning that encoding
 errors raise a ValueError.  Other possible values are 'ignore', 'replace'
 and 'backslashreplace' as well as any other name registered with
@@ -133,7 +133,7 @@ codecs.register_error that can handle ValueErrors.
 static PyObject *
 _codecs_decode_impl(PyModuleDef *module, PyObject *obj, const char *encoding,
                     const char *errors)
-/*[clinic end generated code: output=c81cbf6189a7f878 input=a351e5f5baad1544]*/
+/*[clinic end generated code: output=c81cbf6189a7f878 input=7702c0cc2fa1add6]*/
 {
     if (encoding == NULL)
         encoding = PyUnicode_GetDefaultEncoding();

Modules/clinic/_codecsmodule.c.h

@@ -42,13 +42,12 @@ exit:
 }
 
 PyDoc_STRVAR(_codecs_encode__doc__,
-"encode($module, /, obj, encoding=sys.getdefaultencoding(),\n"
-"       errors=\'strict\')\n"
+"encode($module, /, obj, encoding=\'utf-8\', errors=\'strict\')\n"
 "--\n"
 "\n"
 "Encodes obj using the codec registered for encoding.\n"
 "\n"
-"encoding defaults to the default encoding.  errors may be given to set a\n"
+"The default encoding is \'utf-8\'.  errors may be given to set a\n"
 "different error handling scheme.  Default is \'strict\' meaning that encoding\n"
 "errors raise a ValueError.  Other possible values are \'ignore\', \'replace\'\n"
 "and \'backslashreplace\' as well as any other name registered with\n"
@@ -80,13 +79,12 @@ exit:
 }
 
 PyDoc_STRVAR(_codecs_decode__doc__,
-"decode($module, /, obj, encoding=sys.getdefaultencoding(),\n"
-"       errors=\'strict\')\n"
+"decode($module, /, obj, encoding=\'utf-8\', errors=\'strict\')\n"
 "--\n"
 "\n"
 "Decodes obj using the codec registered for encoding.\n"
 "\n"
-"encoding defaults to the default encoding.  errors may be given to set a\n"
+"Default encoding is \'utf-8\'.  errors may be given to set a\n"
 "different error handling scheme.  Default is \'strict\' meaning that encoding\n"
 "errors raise a ValueError.  Other possible values are \'ignore\', \'replace\'\n"
 "and \'backslashreplace\' as well as any other name registered with\n"
@@ -1395,4 +1393,4 @@ exit:
 #ifndef _CODECS_CODE_PAGE_ENCODE_METHODDEF
     #define _CODECS_CODE_PAGE_ENCODE_METHODDEF
 #endif /* !defined(_CODECS_CODE_PAGE_ENCODE_METHODDEF) */
-/*[clinic end generated code: output=713a4081788da1bc input=a9049054013a1b77]*/
+/*[clinic end generated code: output=9c9967048027c1c7 input=a9049054013a1b77]*/