[RELEASE] Python 3.9.0a6 is now available for testing
On behalf of the entire Python development community, and the currently serving Python release team in particular, I’m pleased to announce the release of Python 3.9.0a6. Get it here: https://www.python.org/downloads/release/python-390a6/ <https://www.python.org/downloads/release/python-390a6/> This is an early developer preview of Python 3.9 Python 3.9 is still in development. This release, 3.9.0a6, is the last out of six planned alpha releases. Alpha releases are intended to make it easier to test the current state of new features and bug fixes and to test the release process. During the alpha phase, features may be added up until the start of the beta phase (2020-05-18) and, if necessary, may be modified or deleted up until the release candidate phase (2020-08-10). Please keep in mind that this is a preview release and its use is not recommended for production environments. Major new features of the 3.9 series, compared to 3.8 Many new features for Python 3.9 are still being planned and written. Among the new major new features and changes so far: PEP 584 <https://www.python.org/dev/peps/pep-0584/>, Union Operators in dict PEP 585 <https://www.python.org/dev/peps/pep-0585/>, Type Hinting Generics In Standard Collections PEP 593 <https://www.python.org/dev/peps/pep-0593/>, Flexible function and variable annotations PEP 602 <https://www.python.org/dev/peps/pep-0602/>, Python adopts a stable annual release cadence PEP 616 <https://www.python.org/dev/peps/pep-0616/>, String methods to remove prefixes and suffixes PEP 617 <https://www.python.org/dev/peps/pep-0617/>, New PEG parser for CPython BPO 38379 <https://bugs.python.org/issue38379>, garbage collection does not block on resurrected objects; BPO 38692 <https://bugs.python.org/issue38692>, os.pidfd_open added that allows process management without races and signals; BPO 39926 <https://bugs.python.org/issue39926>, Unicode support updated to version 13.0.0 BPO 1635741 <https://bugs.python.org/issue1635741>, when Python is initialized multiple times in the same process, it does not leak memory anymore A number of Python builtins (range, tuple, set, frozenset, list) are now sped up using PEP 590 <https://www.python.org/dev/peps/pep-0590> vectorcall A number of standard library modules (audioop, ast, grp, _hashlib, pwd, _posixsubprocess, random, select, struct, termios, zlib) are now using the stable ABI defined by PEP 384 <https://www.python.org/dev/peps/pep-0384/>. (Hey, fellow core developer, if a feature you find important is missing from this list, let Łukasz know <mailto:lukasz@python.org>.) The next pre-release, the first beta release of Python 3.9, will be 3.9.0b1. It is currently scheduled for 2020-05-18. Your friendly release team, Ned Deily @nad <https://discuss.python.org/u/nad> Steve Dower @steve.dower <https://discuss.python.org/u/steve.dower> Łukasz Langa @ambv <https://discuss.python.org/u/ambv>
While testing 3.9a6 in the reportlab package I see this difference from 3.8.2; I built from source using the standard configure make dance. Is this a real change? robin@minikat:~/devel/reportlab/REPOS/reportlab/tests $ python Python 3.8.2 (default, Apr 8 2020, 14:31:25) [GCC 9.3.0] on linux Type "help", "copyright", "credits" or "license" for more information.
norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n')
robin@minikat:~/devel/reportlab/REPOS/reportlab/tests $ python39 Python 3.9.0a6 (default, Apr 29 2020, 07:46:29) [GCC 9.3.0] on linux Type "help", "copyright", "credits" or "license" for more information.
norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n') File "<stdin>", line 1 norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n') ^ SyntaxError: invalid string prefix
robin@minikat:~/devel/reportlab/REPOS/reportlab/tests $ python39 -X oldparser Python 3.9.0a6 (default, Apr 29 2020, 07:46:29) [GCC 9.3.0] on linux Type "help", "copyright", "credits" or "license" for more information.
norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n') File "<stdin>", line 1 norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n') ^ SyntaxError: invalid string prefix
robin@minikat:~/devel/reportlab/REPOS/reportlab/tests
Sorry for noise, but obviously most of my pasted text went wrong; not sure how to use this modern mailman. I see a syntax error in 3.9a6 with the code norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n')
Hi, robin@reportlab.com. That looks like a real error. Thanks for the detailed report. Can you open a ticket on bugs.python.org? Eric On 4/29/2020 10:34 AM, robin@reportlab.com wrote:
While testing 3.9a6 in the reportlab package I see this difference from 3.8.2; I built from source using the standard configure make dance. Is this a real change?
robin@minikat:~/devel/reportlab/REPOS/reportlab/tests $ python Python 3.8.2 (default, Apr 8 2020, 14:31:25) [GCC 9.3.0] on linux Type "help", "copyright", "credits" or "license" for more information.
norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n')
robin@minikat:~/devel/reportlab/REPOS/reportlab/tests $ python39 Python 3.9.0a6 (default, Apr 29 2020, 07:46:29) [GCC 9.3.0] on linux Type "help", "copyright", "credits" or "license" for more information.
norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n') File "<stdin>", line 1 norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n') ^ SyntaxError: invalid string prefix robin@minikat:~/devel/reportlab/REPOS/reportlab/tests $ python39 -X oldparser Python 3.9.0a6 (default, Apr 29 2020, 07:46:29) [GCC 9.3.0] on linux Type "help", "copyright", "credits" or "license" for more information. norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n') File "<stdin>", line 1 norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n') ^ SyntaxError: invalid string prefix robin@minikat:~/devel/reportlab/REPOS/reportlab/tests
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This is a know issue and there is already a discussion on bpo-40246 ( https://bugs.python.org/issue40246) on how to resolve it. On Wed, Apr 29, 2020 at 5:54 PM Eric V. Smith <eric@trueblade.com> wrote:
Hi, robin@reportlab.com.
That looks like a real error. Thanks for the detailed report. Can you open a ticket on bugs.python.org?
Eric
On 4/29/2020 10:34 AM, robin@reportlab.com wrote:
While testing 3.9a6 in the reportlab package I see this difference from 3.8.2; I built from source using the standard configure make dance. Is this a real change?
robin@minikat:~/devel/reportlab/REPOS/reportlab/tests $ python Python 3.8.2 (default, Apr 8 2020, 14:31:25) [GCC 9.3.0] on linux Type "help", "copyright", "credits" or "license" for more information.
norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n')
robin@minikat:~/devel/reportlab/REPOS/reportlab/tests $ python39 Python 3.9.0a6 (default, Apr 29 2020, 07:46:29) [GCC 9.3.0] on linux Type "help", "copyright", "credits" or "license" for more information.
norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n') File "<stdin>", line 1 norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n') ^ SyntaxError: invalid string prefix robin@minikat:~/devel/reportlab/REPOS/reportlab/tests $ python39 -X oldparser Python 3.9.0a6 (default, Apr 29 2020, 07:46:29) [GCC 9.3.0] on linux Type "help", "copyright", "credits" or "license" for more information. norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n') File "<stdin>", line 1 norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n') ^ SyntaxError: invalid string prefix robin@minikat:~/devel/reportlab/REPOS/reportlab/tests
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On 2020-04-29 16:34, robin@reportlab.com wrote:
While testing 3.9a6 in the reportlab package I see this difference from 3.8.2; I built from source using the standard configure make dance. Is this a real change?
Hi, This is a known issue, currently discussed in https://bugs.python.org/issue40246 Thanks for reporting it, though!
robin@minikat:~/devel/reportlab/REPOS/reportlab/tests $ python Python 3.8.2 (default, Apr 8 2020, 14:31:25) [GCC 9.3.0] on linux Type "help", "copyright", "credits" or "license" for more information.
norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n')
robin@minikat:~/devel/reportlab/REPOS/reportlab/tests $ python39 Python 3.9.0a6 (default, Apr 29 2020, 07:46:29) [GCC 9.3.0] on linux Type "help", "copyright", "credits" or "license" for more information.
norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n') File "<stdin>", line 1 norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n') ^ SyntaxError: invalid string prefix
robin@minikat:~/devel/reportlab/REPOS/reportlab/tests $ python39 -X oldparser Python 3.9.0a6 (default, Apr 29 2020, 07:46:29) [GCC 9.3.0] on linux Type "help", "copyright", "credits" or "license" for more information.
norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n') File "<stdin>", line 1 norm=lambda m: m+(m and(m[-1]!='\n'and'\n'or'')or'\n') ^ SyntaxError: invalid string prefix
robin@minikat:~/devel/reportlab/REPOS/reportlab/tests
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participants (5)
-
Eric V. Smith -
Lysandros Nikolaou -
Petr Viktorin -
robin＠reportlab.com -
Łukasz Langa