bpo-32873: Remove a name hack for generic aliases in typing module (GH-6376)
This removes a hack and replaces it with a proper
mapping {'list': 'List', 'dict': 'Dict', ...}.
(cherry picked from commit 2a363d2930e29ec6d8a774973ed5a4965f881f5f)
Co-authored-by: Ivan Levkivskyi <levkivskyi@gmail.com>
bpo-29922: Add more tests for error messages in 'async with'. (GH-6370)
Different paths are executed for normal exit and for leaving
the 'async with' block with 'break', 'continue' or 'return'.
(cherry picked from commit 2eeac269dd1e04a2a179384576986c3e47895ee0)
bpo-33195: Doc: Deprecate Py_UNICODE in c-api/arg (GH-6329)
Py_UNICODE is deprecated since Python 3.3.
But the deprecation is missed in the c-api/arg document.
(cherry picked from commit 42ec190761a2e8503aaa06f0bfaaabe98749179b)
bpo-33204: IDLE: consistently color invalid string prefixes (GH-6344)
A 'u' string prefix cannot be paired with either 'r' or 'f'. Consistently
color as much of the prefix, starting at the right, as is valid.
(cherry picked from commit da58533ac67b01ce8f6466e6f03ff6b8b3bb04d5)
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
Ned Deily [Thu, 29 Mar 2018 11:41:11 +0000 (07:41 -0400)]
bpo-32726: macOS 10.6+ installer now builds Tcl/TK 8.6 (GH-6308)
Build and link with private copy of Tcl/Tk 8.6 for the macOS 10.6+
installer. The 10.9+ installer variant already does this. This means that
the Python 3.7 provided by the python.org macOS installers no longer need or
use any external versions of Tcl/Tk, either system-provided or user-
installed, such as ActiveTcl.
bpo-32726: Do not force IDLE.app to launch in 32-bit mode. (GH-6280)
Forcing the macOS IDLE.app gui process to launch in 32-mode was
a necessary hack for old versions of Tk (Aqua Carbon as in Tk 8.4
and early versions of 8.5); it is not needed for current versions
of Tk. Since 32-bit launching will no longer be supported on
future releases of macOS, allow IDLE.app to launch in 64-bit mode.
(cherry picked from commit df532ab752680f6e359672c2cd40bec8ac848628)
bpo-32873: Treat type variables and special typing forms as immutable by copy and pickle (GH-6216)
This also fixes python/typingGH-512
This also fixes python/typingGH-511
As was discussed in both issues, some typing forms deserve to be treated
as immutable by copy and pickle modules, so that:
* copy(X) is X
* deepcopy(X) is X
* loads(dumps(X)) is X GH- pickled by reference
This PR adds such behaviour to:
* Type variables
* Special forms like Union, Any, ClassVar
* Unsubscripted generic aliases to containers like List, Mapping, Iterable
This not only resolves inconsistencies mentioned in the issues, but also
improves backwards compatibility with previous versions of Python
(including 3.6).
Note that this requires some dances with __module__ for type variables
(similar to NamedTuple) because the class TypeVar itself is define in typing,
while type variables should get module where they were defined.
bpo-32844: Fix a subprocess misredirection of a low fd (GH5689)
bpo-32844: subprocess: Fix a potential misredirection of a low fd to stderr.
When redirecting, subprocess attempts to achieve the following state:
each fd to be redirected to is less than or equal to the fd
it is redirected from, which is necessary because redirection
occurs in the ascending order of destination descriptors.
It fails to do so in a couple of corner cases,
for example, if 1 is redirected to 2 and 0 is closed in the parent.
(cherry picked from commit 0e7144b064a19493a146af94175a087b3888c37b)
Fix description about SimpleXMLRPCServer constructor parameter bind_and_activate. (GH-776)
Passing True as the `bind_and_activate` *do* immediately opening and binding to their socket.
(cherry picked from commit e6223579c87b93f3e60d28796f521587d88091d4)
Allow ttk.Treeview.insert to insert iid that has a false boolean value.
Note iid=0 and iid=False would be same.
(cherry picked from commit 3ab44c0783eebdff687014f7d14d5dec59b6bd39)
Nick Coghlan [Sun, 25 Mar 2018 13:43:50 +0000 (23:43 +1000)]
bpo-33053: -m now adds *starting* directory to sys.path (GH-6231) (#6236)
Historically, -m added the empty string as sys.path
zero, meaning it resolved imports against the current
working directory, the same way -c and the interactive
prompt do.
This changes the sys.path initialisation to add the
*starting* working directory as sys.path[0] instead,
such that changes to the working directory while the
program is running will have no effect on imports
when using the -m switch.
[3.7] bpo-33136: Harden ssl module against CVE-2018-8970 (GH-6229) (GH-6230)
Harden ssl module against LibreSSL CVE-2018-8970.
X509_VERIFY_PARAM_set1_host() is called with an explicit namelen. A new test
ensures that NULL bytes are not allowed.
- new test case for pre-initialization of sys.warnoptions and sys._xoptions
- restored ability to call these APIs prior to Py_Initialize
- updated the docs for the affected APIs to make it clear they can be
called before Py_Initialize
- also enhanced the existing embedding test cases
to check for expected settings in the sys module
(cherry picked from commit bc77eff8b96be4f035e665ab35c1d06e22f46491)
bpo-33134: dataclasses: use function dispatch table for hash, instead of a string lookup which then is tested with if tests. (GH-6222)
* Change _hash_action to be a function table lookup, instead of a list
of strings which is then tested with if statements.
(cherry picked from commit 01d618c5606a239b03ad1269541eddb6e724775d)
Co-authored-by: Eric V. Smith <ericvsmith@users.noreply.github.com>
- When adding a single element to a list, use .append() instead of
+= and creating a new list.
- For consistency, import the copy module, instead of just deepcopy. This
leaves only a module at the class level, instead of a function.
- Improve some comments.
- Improve some whitespace.
- Use tuples instead of lists.
- Simplify a test.
(cherry picked from commit f96ddade0094d162cb6c2fd7255c5e8a90b5c37d)
Co-authored-by: Eric V. Smith <ericvsmith@users.noreply.github.com>
bpo-32505: dataclasses: raise TypeError if a member variable is of type Field, but doesn't have a type annotation. (GH-6192)
If a dataclass has a member variable that's of type Field, but it doesn't have a type annotation, raise TypeError.
(cherry picked from commit 56970b8ce9d23269d20a76f13c80e670c856ba7f)
Co-authored-by: Eric V. Smith <ericvsmith@users.noreply.github.com>
bpo-33018: Improve issubclass() error checking and message. (GH-5944)
This improves error message for situations when a non-class is
checked w.r.t. an abstract base class.
(cherry picked from commit 40472dd42de4f7265d456458cd13ad6894d736db)
bpo-27683: Fix a regression for host() of ipaddress network objects (GH-6016)
The result of host() was not empty when the network is constructed by a tuple containing an
integer mask and only 1 bit left for addresses.
(cherry picked from commit 10b134a07c898c2fbc5fd3582503680a54ed80a2)
[3.7] bpo-33021: Release the GIL during fstat() calls (GH-6019) (GH-6159)
fstat may block for long time if the file descriptor is on a
non-responsive NFS server, hanging all threads. Most fstat() calls are
handled by _Py_fstat(), releasing the GIL internally, but but
_Py_fstat_noraise() does not release the GIL, and most calls release the
GIL explicitly around it.
This patch fixes last 2 calls to _Py_fstat_no_raise(), avoiding hangs
when calling:
- mmap.mmap()
- os.urandom()
- random.seed()
(cherry picked from commit 4484f9dca9149da135bbae035f10a50d20d1cbbb)
bpo-33100: Dataclasses now handles __slots__ and default values correctly. (GH-6152) (GH-6153)
If the class has a member that's a MemberDescriptorType, it's not a default value, it's from that member being in __slots__.
(cherry picked from commit 7389fd935c95b4b6f094312294e703ee0de18719)
Co-authored-by: Eric V. Smith <ericvsmith@users.noreply.github.com>
bpo-32953: Dataclasses: frozen should not be inherited for non-dataclass derived classes (GH-6147) (GH-6148)
If a non-dataclass derives from a frozen dataclass, allow attributes to be set.
Require either all of the dataclasses in a class hierarchy to be frozen, or all non-frozen.
Store `@dataclass` parameters on the class object under `__dataclass_params__`. This is needed to detect frozen base classes.
(cherry picked from commit f199bc655eb50c28e94010714629b376bbbd077b)
Co-authored-by: Eric V. Smith <ericvsmith@users.noreply.github.com>
bpo-32374: m_traverse may be called with m_state=NULL (GH-5140)
Multi-phase initialized modules allow m_traverse to be called while the
module is still being initialized, so module authors may need to account
for that.
(cherry picked from commit c2b0b12d1a137ada1023ab7c10b8d9a0249d95f9)
[3.7] bpo-32885: Tools/scripts/pathfix.py: Add -n option for no backup~ (GH-5772) (#6103)
Creating backup files with ~ suffix can be undesirable in some environment,
such as when building RPM packages. Instead of requiring the user to remove
those files manually, option -n was added, that simply disables this feature.
bpo-33064: lib2to3: support trailing comma after *args and **kwargs (GH-6096) (#6097)
New tests also added.
I also made the comments in line with the builtin Grammar/Grammar. PEP 306 was
withdrawn, Kees Blom's railroad program has been lost to the sands of time for
at least 16 years now (I found a python-dev post from people looking for it).
(cherry picked from commit b51f5de71163f096d2d5229ede5379cdb284f651)
bpo-31804: Fix multiprocessing.Process with broken standard streams (GH-6079) (GH-6080)
In some conditions the standard streams will be None or closed in the child process (for example if using "pythonw" instead of "python" on Windows). Avoid failing with a non-0 exit code in those conditions.
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