Python 3.9.0b5v3.9.0b5

27 files changed, 234 insertions, 46 deletions

diff --git a/Include/patchlevel.h b/Include/patchlevel.h
index f76eee9472c..2fb6ae1b7aa 100644
--- a/Include/patchlevel.h
+++ b/Include/patchlevel.h
@@ -20,10 +20,10 @@
 #define PY_MINOR_VERSION        9
 #define PY_MICRO_VERSION        0
 #define PY_RELEASE_LEVEL        PY_RELEASE_LEVEL_BETA
-#define PY_RELEASE_SERIAL       4
+#define PY_RELEASE_SERIAL       5
 
 /* Version as a string */
-#define PY_VERSION              "3.9.0b4+"
+#define PY_VERSION              "3.9.0b5"
 /*--end constants--*/
 
 /* Version as a single 4-byte hex number, e.g. 0x010502B2 == 1.5.2b2.
diff --git a/Lib/pydoc_data/topics.py b/Lib/pydoc_data/topics.py
index e96822bb269..8e5b722b498 100644
--- a/Lib/pydoc_data/topics.py
+++ b/Lib/pydoc_data/topics.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Autogenerated by Sphinx on Thu Jul  2 19:55:42 2020
+# Autogenerated by Sphinx on Mon Jul 20 19:44:38 2020
 topics = {'assert': 'The "assert" statement\n'
            '**********************\n'
            '\n'
diff --git a/Misc/NEWS.d/3.9.0b5.rst b/Misc/NEWS.d/3.9.0b5.rst
new file mode 100644
index 00000000000..f870d834e2c
--- /dev/null
+++ b/Misc/NEWS.d/3.9.0b5.rst
@@ -0,0 +1,230 @@
+.. bpo: 41304
+.. date: 2020-07-15-20-15-08
+.. nonce: vNEeYA
+.. release date: 2020-07-20
+.. section: Security
+
+Fixes `python3x._pth` being ignored on Windows, caused by the fix for
+:issue:`29778` (CVE-2020-15801).
+
+..
+
+.. bpo: 41162
+.. date: 2020-07-03-20-41-29
+.. nonce: tb8pVj
+.. section: Security
+
+Audit hooks are now cleared later during finalization to avoid missing
+events.
+
+..
+
+.. bpo: 29778
+.. date: 2020-07-03-17-21-37
+.. nonce: cR_fGS
+.. section: Security
+
+Ensure :file:`python3.dll` is loaded from correct locations when Python is
+embedded (CVE-2020-15523).
+
+..
+
+.. bpo: 39603
+.. date: 2020-02-12-14-17-39
+.. nonce: Gt3RSg
+.. section: Security
+
+Prevent http header injection by rejecting control characters in
+http.client.putrequest(...).
+
+..
+
+.. bpo: 41295
+.. date: 2020-07-18-08-15-32
+.. nonce: pu8Ezo
+.. section: Core and Builtins
+
+Resolve a regression in CPython 3.8.4 where defining "__setattr__" in a
+multi-inheritance setup and calling up the hierarchy chain could fail if
+builtins/extension types were involved in the base types.
+
+..
+
+.. bpo: 41247
+.. date: 2020-07-08-22-03-54
+.. nonce: PndYIk
+.. section: Core and Builtins
+
+Always cache the running loop holder when running
+``asyncio.set_running_loop``.
+
+..
+
+.. bpo: 41252
+.. date: 2020-07-08-21-55-23
+.. nonce: nBWL-Y
+.. section: Core and Builtins
+
+Fix incorrect refcounting in _ssl.c's ``_servername_callback()``.
+
+..
+
+.. bpo: 41215
+.. date: 2020-07-06-18-36-33
+.. nonce: vFGFIz
+.. section: Core and Builtins
+
+Use non-NULL default values in the PEG parser keyword list to overcome a bug
+that was preventing Python from being properly compiled when using the XLC
+compiler. Patch by Pablo Galindo.
+
+..
+
+.. bpo: 41218
+.. date: 2020-07-06-13-35-17
+.. nonce: oKnSr2
+.. section: Core and Builtins
+
+Python 3.8.3 had a regression where compiling with
+ast.PyCF_ALLOW_TOP_LEVEL_AWAIT would aggressively mark list comprehension
+with CO_COROUTINE. Now only list comprehension making use of async/await
+will tagged as so.
+
+..
+
+.. bpo: 41175
+.. date: 2020-06-30-20-17-31
+.. nonce: acJoXB
+.. section: Core and Builtins
+
+Guard against a NULL pointer dereference within bytearrayobject triggered by
+the ``bytearray() + bytearray()`` operation.
+
+..
+
+.. bpo: 39960
+.. date: 2020-06-23-18-32-41
+.. nonce: Kez3fP
+.. section: Core and Builtins
+
+The "hackcheck" that prevents sneaking around a type's __setattr__() by
+calling the superclass method was rewritten to allow C implemented heap
+types.
+
+..
+
+.. bpo: 41288
+.. date: 2020-07-13-15-06-35
+.. nonce: 8mn5P-
+.. section: Library
+
+Unpickling invalid NEWOBJ_EX opcode with the C implementation raises now
+UnpicklingError instead of crashing.
+
+..
+
+.. bpo: 39017
+.. date: 2020-07-12-22-16-58
+.. nonce: x3Cg-9
+.. section: Library
+
+Avoid infinite loop when reading specially crafted TAR files using the
+tarfile module (CVE-2019-20907).
+
+..
+
+.. bpo: 41235
+.. date: 2020-07-07-21-56-26
+.. nonce: H2csMU
+.. section: Library
+
+Fix the error handling in :meth:`ssl.SSLContext.load_dh_params`.
+
+..
+
+.. bpo: 41207
+.. date: 2020-07-06-16-58-53
+.. nonce: Emw7Nk
+.. section: Library
+
+In distutils.spawn, restore expectation that DistutilsExecError is raised
+when the command is not found.
+
+..
+
+.. bpo: 39168
+.. date: 2020-07-04-21-56-46
+.. nonce: DQWsXj
+.. section: Library
+
+Remove the ``__new__`` method of :class:`typing.Generic`.
+
+..
+
+.. bpo: 41194
+.. date: 2020-07-03-13-15-08
+.. nonce: djrKjs
+.. section: Library
+
+Fix a crash in the ``_ast`` module: it can no longer be loaded more than
+once. It now uses a global state rather than a module state.
+
+..
+
+.. bpo: 39384
+.. date: 2020-05-30-12-44-29
+.. nonce: Iqxy3q
+.. section: Library
+
+Fixed email.contentmanager to allow set_content() to set a null string.
+
+..
+
+.. bpo: 37703
+.. date: 2019-08-16-20-25-42
+.. nonce: Qm_l_H
+.. section: Documentation
+
+Updated Documentation to comprehensively elaborate on the behaviour of
+gather.cancel()
+
+..
+
+.. bpo: 40741
+.. date: 2020-06-19-14-19-08
+.. nonce: L7yTbm
+.. section: macOS
+
+Update macOS installer to use SQLite 3.32.3.
+
+..
+
+.. bpo: 41300
+.. date: 2020-07-16-17-39-06
+.. nonce: wRixNb
+.. section: IDLE
+
+Save files with non-ascii chars. Fix regression released in 3.9.0b4 and
+3.8.4.
+
+..
+
+.. bpo: 37765
+.. date: 2020-07-07-18-44-30
+.. nonce: umc1o8
+.. section: IDLE
+
+Add keywords to module name completion list.  Rewrite Completions section of
+IDLE doc.
+
+..
+
+.. bpo: 40170
+.. date: 2020-07-08-10-14-52
+.. nonce: N6Qx1i
+.. section: C API
+
+Revert :c:func:`PyType_HasFeature` change: it reads again directly the
+:c:member:`PyTypeObject.tp_flags` member when the limited C API is not used,
+rather than always calling :c:func:`PyType_GetFlags` which hides
+implementation details.
diff --git a/Misc/NEWS.d/next/C API/2020-07-08-10-14-52.bpo-40170.N6Qx1i.rst b/Misc/NEWS.d/next/C API/2020-07-08-10-14-52.bpo-40170.N6Qx1i.rst
deleted file mode 100644
index 760a3ff4d17..00000000000
--- a/Misc/NEWS.d/next/C API/2020-07-08-10-14-52.bpo-40170.N6Qx1i.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-Revert :c:func:`PyType_HasFeature` change: it reads again directly the
-:c:member:`PyTypeObject.tp_flags` member when the limited C API is not used,
-rather than always calling :c:func:`PyType_GetFlags` which hides implementation
-details.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2020-06-23-18-32-41.bpo-39960.Kez3fP.rst b/Misc/NEWS.d/next/Core and Builtins/2020-06-23-18-32-41.bpo-39960.Kez3fP.rst
deleted file mode 100644
index f69fccfa4db..00000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2020-06-23-18-32-41.bpo-39960.Kez3fP.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-The "hackcheck" that prevents sneaking around a type's __setattr__() by calling the
-superclass method was rewritten to allow C implemented heap types.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2020-06-30-20-17-31.bpo-41175.acJoXB.rst b/Misc/NEWS.d/next/Core and Builtins/2020-06-30-20-17-31.bpo-41175.acJoXB.rst
deleted file mode 100644
index 844fb804c0c..00000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2020-06-30-20-17-31.bpo-41175.acJoXB.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Guard against a NULL pointer dereference within bytearrayobject triggered by
-the ``bytearray() + bytearray()`` operation.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2020-07-06-13-35-17.bpo-41218.oKnSr2.rst b/Misc/NEWS.d/next/Core and Builtins/2020-07-06-13-35-17.bpo-41218.oKnSr2.rst
deleted file mode 100644
index d98b3433ef0..00000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2020-07-06-13-35-17.bpo-41218.oKnSr2.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-Python 3.8.3 had a regression where compiling with
-ast.PyCF_ALLOW_TOP_LEVEL_AWAIT would aggressively mark list comprehension
-with CO_COROUTINE. Now only list comprehension making use of async/await
-will tagged as so.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2020-07-06-18-36-33.bpo-41215.vFGFIz.rst b/Misc/NEWS.d/next/Core and Builtins/2020-07-06-18-36-33.bpo-41215.vFGFIz.rst
deleted file mode 100644
index 7343da31e94..00000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2020-07-06-18-36-33.bpo-41215.vFGFIz.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Use non-NULL default values in the PEG parser keyword list to overcome a bug that was preventing

-Python from being properly compiled when using the XLC compiler. Patch by Pablo Galindo.

diff --git a/Misc/NEWS.d/next/Core and Builtins/2020-07-08-21-55-23.bpo-41252.nBWL-Y.rst b/Misc/NEWS.d/next/Core and Builtins/2020-07-08-21-55-23.bpo-41252.nBWL-Y.rst
deleted file mode 100644
index 65f3189c83e..00000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2020-07-08-21-55-23.bpo-41252.nBWL-Y.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fix incorrect refcounting in _ssl.c's ``_servername_callback()``.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2020-07-08-22-03-54.bpo-41247.PndYIk.rst b/Misc/NEWS.d/next/Core and Builtins/2020-07-08-22-03-54.bpo-41247.PndYIk.rst
deleted file mode 100644
index 08699b6e4a1..00000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2020-07-08-22-03-54.bpo-41247.PndYIk.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Always cache the running loop holder when running
-``asyncio.set_running_loop``.
diff --git a/Misc/NEWS.d/next/Core and Builtins/2020-07-18-08-15-32.bpo-41295.pu8Ezo.rst b/Misc/NEWS.d/next/Core and Builtins/2020-07-18-08-15-32.bpo-41295.pu8Ezo.rst
deleted file mode 100644
index d61fd8f0a29..00000000000
--- a/Misc/NEWS.d/next/Core and Builtins/2020-07-18-08-15-32.bpo-41295.pu8Ezo.rst
+++ /dev/null
@@ -1,3 +0,0 @@
-Resolve a regression in CPython 3.8.4 where defining "__setattr__" in a
-multi-inheritance setup and calling up the hierarchy chain could fail
-if builtins/extension types were involved in the base types.
diff --git a/Misc/NEWS.d/next/Documentation/2019-08-16-20-25-42.bpo-37703.Qm_l_H.rst b/Misc/NEWS.d/next/Documentation/2019-08-16-20-25-42.bpo-37703.Qm_l_H.rst
deleted file mode 100644
index a1a1c354b16..00000000000
--- a/Misc/NEWS.d/next/Documentation/2019-08-16-20-25-42.bpo-37703.Qm_l_H.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Updated Documentation to comprehensively elaborate on the behaviour of
-gather.cancel()
diff --git a/Misc/NEWS.d/next/IDLE/2020-07-07-18-44-30.bpo-37765.umc1o8.rst b/Misc/NEWS.d/next/IDLE/2020-07-07-18-44-30.bpo-37765.umc1o8.rst
deleted file mode 100644
index f8b53ca482a..00000000000
--- a/Misc/NEWS.d/next/IDLE/2020-07-07-18-44-30.bpo-37765.umc1o8.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Add keywords to module name completion list.  Rewrite Completions
-section of IDLE doc.
diff --git a/Misc/NEWS.d/next/IDLE/2020-07-16-17-39-06.bpo-41300.wRixNb.rst b/Misc/NEWS.d/next/IDLE/2020-07-16-17-39-06.bpo-41300.wRixNb.rst
deleted file mode 100644
index 080775f7d7a..00000000000
--- a/Misc/NEWS.d/next/IDLE/2020-07-16-17-39-06.bpo-41300.wRixNb.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Save files with non-ascii chars. Fix regression released in 3.9.0b4 and
-3.8.4.
diff --git a/Misc/NEWS.d/next/Library/2020-05-30-12-44-29.bpo-39384.Iqxy3q.rst b/Misc/NEWS.d/next/Library/2020-05-30-12-44-29.bpo-39384.Iqxy3q.rst
deleted file mode 100644
index 482ae624da0..00000000000
--- a/Misc/NEWS.d/next/Library/2020-05-30-12-44-29.bpo-39384.Iqxy3q.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fixed email.contentmanager to allow set_content() to set a null string.
diff --git a/Misc/NEWS.d/next/Library/2020-07-03-13-15-08.bpo-41194.djrKjs.rst b/Misc/NEWS.d/next/Library/2020-07-03-13-15-08.bpo-41194.djrKjs.rst
deleted file mode 100644
index d63a0e5222b..00000000000
--- a/Misc/NEWS.d/next/Library/2020-07-03-13-15-08.bpo-41194.djrKjs.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Fix a crash in the ``_ast`` module: it can no longer be loaded more than once.
-It now uses a global state rather than a module state.
diff --git a/Misc/NEWS.d/next/Library/2020-07-04-21-56-46.bpo-39168.DQWsXj.rst b/Misc/NEWS.d/next/Library/2020-07-04-21-56-46.bpo-39168.DQWsXj.rst
deleted file mode 100644
index 667885eccd9..00000000000
--- a/Misc/NEWS.d/next/Library/2020-07-04-21-56-46.bpo-39168.DQWsXj.rst
+++ /dev/null
@@ -1 +0,0 @@
-Remove the ``__new__`` method of :class:`typing.Generic`.
diff --git a/Misc/NEWS.d/next/Library/2020-07-06-16-58-53.bpo-41207.Emw7Nk.rst b/Misc/NEWS.d/next/Library/2020-07-06-16-58-53.bpo-41207.Emw7Nk.rst
deleted file mode 100644
index db99c63f948..00000000000
--- a/Misc/NEWS.d/next/Library/2020-07-06-16-58-53.bpo-41207.Emw7Nk.rst
+++ /dev/null
@@ -1 +0,0 @@
-In distutils.spawn, restore expectation that DistutilsExecError is raised when the command is not found.
diff --git a/Misc/NEWS.d/next/Library/2020-07-07-21-56-26.bpo-41235.H2csMU.rst b/Misc/NEWS.d/next/Library/2020-07-07-21-56-26.bpo-41235.H2csMU.rst
deleted file mode 100644
index c55275bb1c6..00000000000
--- a/Misc/NEWS.d/next/Library/2020-07-07-21-56-26.bpo-41235.H2csMU.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fix the error handling in :meth:`ssl.SSLContext.load_dh_params`.
diff --git a/Misc/NEWS.d/next/Library/2020-07-12-22-16-58.bpo-39017.x3Cg-9.rst b/Misc/NEWS.d/next/Library/2020-07-12-22-16-58.bpo-39017.x3Cg-9.rst
deleted file mode 100644
index ad26676f8b8..00000000000
--- a/Misc/NEWS.d/next/Library/2020-07-12-22-16-58.bpo-39017.x3Cg-9.rst
+++ /dev/null
@@ -1 +0,0 @@
-Avoid infinite loop when reading specially crafted TAR files using the tarfile module (CVE-2019-20907).
diff --git a/Misc/NEWS.d/next/Library/2020-07-13-15-06-35.bpo-41288.8mn5P-.rst b/Misc/NEWS.d/next/Library/2020-07-13-15-06-35.bpo-41288.8mn5P-.rst
deleted file mode 100644
index 3c3adbabf16..00000000000
--- a/Misc/NEWS.d/next/Library/2020-07-13-15-06-35.bpo-41288.8mn5P-.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Unpickling invalid NEWOBJ_EX opcode with the C implementation raises now
-UnpicklingError instead of crashing.
diff --git a/Misc/NEWS.d/next/Security/2020-02-12-14-17-39.bpo-39603.Gt3RSg.rst b/Misc/NEWS.d/next/Security/2020-02-12-14-17-39.bpo-39603.Gt3RSg.rst
deleted file mode 100644
index 990affc3edd..00000000000
--- a/Misc/NEWS.d/next/Security/2020-02-12-14-17-39.bpo-39603.Gt3RSg.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Prevent http header injection by rejecting control characters in
-http.client.putrequest(...).
diff --git a/Misc/NEWS.d/next/Security/2020-07-03-17-21-37.bpo-29778.cR_fGS.rst b/Misc/NEWS.d/next/Security/2020-07-03-17-21-37.bpo-29778.cR_fGS.rst
deleted file mode 100644
index 998ffb1ee66..00000000000
--- a/Misc/NEWS.d/next/Security/2020-07-03-17-21-37.bpo-29778.cR_fGS.rst
+++ /dev/null
@@ -1,2 +0,0 @@
-Ensure :file:`python3.dll` is loaded from correct locations when Python is
-embedded (CVE-2020-15523).
diff --git a/Misc/NEWS.d/next/Security/2020-07-03-20-41-29.bpo-41162.tb8pVj.rst b/Misc/NEWS.d/next/Security/2020-07-03-20-41-29.bpo-41162.tb8pVj.rst
deleted file mode 100644
index f0333ac4a7b..00000000000
--- a/Misc/NEWS.d/next/Security/2020-07-03-20-41-29.bpo-41162.tb8pVj.rst
+++ /dev/null
@@ -1 +0,0 @@
-Audit hooks are now cleared later during finalization to avoid missing events.
\ No newline at end of file
diff --git a/Misc/NEWS.d/next/Security/2020-07-15-20-15-08.bpo-41304.vNEeYA.rst b/Misc/NEWS.d/next/Security/2020-07-15-20-15-08.bpo-41304.vNEeYA.rst
deleted file mode 100644
index 8cc4bb8d280..00000000000
--- a/Misc/NEWS.d/next/Security/2020-07-15-20-15-08.bpo-41304.vNEeYA.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fixes `python3x._pth` being ignored on Windows, caused by the fix for :issue:`29778` (CVE-2020-15801).
diff --git a/Misc/NEWS.d/next/macOS/2020-06-19-14-19-08.bpo-40741.L7yTbm.rst b/Misc/NEWS.d/next/macOS/2020-06-19-14-19-08.bpo-40741.L7yTbm.rst
deleted file mode 100644
index 78a21b76c2f..00000000000
--- a/Misc/NEWS.d/next/macOS/2020-06-19-14-19-08.bpo-40741.L7yTbm.rst
+++ /dev/null
@@ -1 +0,0 @@
-Update macOS installer to use SQLite 3.32.3.
diff --git a/README.rst b/README.rst
index eb471665871..b9d15ef3eac 100644
--- a/README.rst
+++ b/README.rst
@@ -1,4 +1,4 @@
-This is Python version 3.9.0 beta 4
+This is Python version 3.9.0 beta 5
 ===================================
 
 .. image:: https://travis-ci.org/python/cpython.svg?branch=3.9