Python 3.9.0a2

Author: ambv

Include/patchlevel.h

@@ -20,10 +20,10 @@
 #define PY_MINOR_VERSION        9
 #define PY_MICRO_VERSION        0
 #define PY_RELEASE_LEVEL        PY_RELEASE_LEVEL_ALPHA
-#define PY_RELEASE_SERIAL       1
+#define PY_RELEASE_SERIAL       2
 
 /* Version as a string */
-#define PY_VERSION              "3.9.0a1+"
+#define PY_VERSION              "3.9.0a2"
 /*--end constants--*/
 
 /* Version as a single 4-byte hex number, e.g. 0x010502B2 == 1.5.2b2.

Lib/pydoc_data/topics.py

@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Autogenerated by Sphinx on Tue Nov 19 11:42:25 2019
+# Autogenerated by Sphinx on Wed Dec 18 22:05:39 2019
 topics = {'assert': 'The "assert" statement\n'
            '**********************\n'
            '\n'
@@ -862,6 +862,22 @@
                      'created. The\n'
                      '   descriptor has been assigned to *name*.\n'
                      '\n'
+                     '   Note: "__set_name__()" is only called implicitly as '
+                     'part of the\n'
+                     '     "type" constructor, so it will need to be called '
+                     'explicitly with\n'
+                     '     the appropriate parameters when a descriptor is '
+                     'added to a class\n'
+                     '     after initial creation:\n'
+                     '\n'
+                     '        class A:\n'
+                     '           pass\n'
+                     '        descr = custom_descriptor()\n'
+                     '        A.attr = descr\n'
+                     "        descr.__set_name__(A, 'attr')\n"
+                     '\n'
+                     '     See Creating the class object for more details.\n'
+                     '\n'
                      '   New in version 3.6.\n'
                      '\n'
                      'The attribute "__objclass__" is interpreted by the '
@@ -4224,6 +4240,17 @@
              '   Quit from the debugger.  The program being executed is '
              'aborted.\n'
              '\n'
+             'debug code\n'
+             '\n'
+             '   Enter a recursive debugger that steps through the code '
+             'argument\n'
+             '   (which is an arbitrary expression or statement to be executed '
+             'in\n'
+             '   the current environment).\n'
+             '\n'
+             'retval\n'
+             'Print the return value for the last return of a function.\n'
+             '\n'
              '-[ Footnotes ]-\n'
              '\n'
              '[1] Whether a frame is considered to originate in a certain '
@@ -8525,6 +8552,22 @@
                  'The\n'
                  '   descriptor has been assigned to *name*.\n'
                  '\n'
+                 '   Note: "__set_name__()" is only called implicitly as part '
+                 'of the\n'
+                 '     "type" constructor, so it will need to be called '
+                 'explicitly with\n'
+                 '     the appropriate parameters when a descriptor is added '
+                 'to a class\n'
+                 '     after initial creation:\n'
+                 '\n'
+                 '        class A:\n'
+                 '           pass\n'
+                 '        descr = custom_descriptor()\n'
+                 '        A.attr = descr\n'
+                 "        descr.__set_name__(A, 'attr')\n"
+                 '\n'
+                 '     See Creating the class object for more details.\n'
+                 '\n'
                  '   New in version 3.6.\n'
                  '\n'
                  'The attribute "__objclass__" is interpreted by the "inspect" '
@@ -11902,8 +11945,9 @@
           '      bytecode offsets to line numbers (for details see the source\n'
           '      code of the interpreter); "co_stacksize" is the required '
           'stack\n'
-          '      size (including local variables); "co_flags" is an integer\n'
-          '      encoding a number of flags for the interpreter.\n'
+          '      size; "co_flags" is an integer encoding a number of flags '
+          'for\n'
+          '      the interpreter.\n'
           '\n'
           '      The following flag bits are defined for "co_flags": bit '
           '"0x04"\n'