| Summary: | Update candidate: python-curtsies fix for Python 3.6+ support (fixes bpython start) | ||
|---|---|---|---|
| Product: | Mageia | Reporter: | Rémi Verschelde <rverschelde> |
| Component: | RPM Packages | Assignee: | QA Team <qa-bugs> |
| Status: | RESOLVED FIXED | QA Contact: | |
| Severity: | normal | ||
| Priority: | Normal | CC: | sysadmin-bugs, tarazed25, tmb |
| Version: | 7 | Keywords: | advisory, has_procedure, validated_update |
| Target Milestone: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | MGA7-64-OK | ||
| Source RPM: | python-curtsies-0.3.0-3.mga7 | CVE: | |
| Status comment: | |||
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Rémi Verschelde
2019-10-09 11:45:54 CEST
Keywords:
(none) =>
has_procedure Mageia 7, x86_64 Thanks Rémi for the procedure. Installed bpython and bpython3 from release, which pulled in the python?-curtsies packages. Launched bpython and dropped a fibonacci sequence generator into it. $ bpython bpython version 0.18 on top of Python 2.7.16 /usr/bin/python2 >>> def fibo( ): [...] >>> fibo( ) <generator object fibo at 0x7f16ca004be0> >>> import itertools >>> print list( itertools.islice( fibo( ), 10 ) ) [0, 1, 1, 2, 3, 5, 8, 13, 21, 34] >>> exit( 0 ) $ bpython3 Traceback (most recent call last): [...] pkg_resources.DistributionNotFound: The 'typing' distribution was not found and is required by curtsies Updated python?-curtsies. Ran bpython with fibo( ) Worked fine, including hints. $ bpython3 bpython version 0.18 on top of Python 3.7.3 /usr/bin/python3 >>> def fibo( ): ... ''' Unbounded generator for Fibonacci numbers ''' ... x, y = 0, 1 ... while True: ... yield x ... x, y = y, x + y ... >>> if __name__ == "__main__": ... import itertools ... print( list( itertools.islice( fibo( ), 13 ) ) ) ... [0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144] >>> exit( 1 ) That worked fine but it was not as straightforward as it looks because initially it trapped a missing parentheses error in the print function (classic). The error pointers were quite helpful in indicating the source of the problem. Sorted for 64-bits. Whiteboard:
(none) =>
MGA7-64-OK
Len Lawrence
2019-10-20 01:26:47 CEST
CC:
(none) =>
sysadmin-bugs
Thomas Backlund
2019-10-23 19:43:07 CEST
Keywords:
(none) =>
advisory An update for this issue has been pushed to the Mageia Updates repository. https://advisories.mageia.org/MGAA-2019-0171.html Status:
NEW =>
RESOLVED |
I noticed that `bpython3` from the `python3-bpython` package does not work on Mageia 7. It's because its dependency `python3-curtsies` requires the `typing` package, which is only needed for Python 2 or Python 3.5 or earlier. Since Mageia 7 ships with Python 3.7, `bpython3` throws this error: ``` Traceback (most recent call last): File "/usr/bin/bpython", line 6, in <module> from pkg_resources import load_entry_point File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 3241, in <module> @_call_aside File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 3225, in _call_aside f(*args, **kwargs) File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 3254, in _initialize_master_working_set working_set = WorkingSet._build_master() File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 583, in _build_master ws.require(__requires__) File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 900, in require needed = self.resolve(parse_requirements(requirements)) File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 786, in resolve raise DistributionNotFound(req, requirers) pkg_resources.DistributionNotFound: The 'typing' distribution was not found and is required by curtsies ``` I backported an upstream commit to fix it. Advisory: ========= Updated python-curtsies packages fix Python 3.7 support python3-curtsies required the 'typing' module which is now part of the standard library since Python 3.6, thus throwing an error when using it with Mageia 7's Python 3.7. This update fixes it, thereby fixing the launch of the bpython3 interpreter from the python3-bpython package. References: - https://github.com/bpython/curtsies/commit/217b4f83e954837f8adc4c549c1f2f9f2bb272a7 RPMs in core/updates_testing: ============================= python-curtsies-0.3.0-3.1.mga7 python3-curtsies-0.3.0-3.1.mga7 SRPM in core/updates_testing: ============================= python-curtsies-0.3.0-3.1.mga7 Testing procedure: ================== Launch `bpython3` from the python3-bpython package. Before the update, it should throw the above error. After the update, it should work fine (it's a Python interpreter, so it launches in the terminal - you can type python code and get nice hints and documentation). The python2 version should be unaffected (can be checked with `bpython` from the bpython package).