Version History¶

PyQ 4.0.2 ¶

Released on 2017-05-12

Enhancements:

!523 - #909: Support installing PyQ on Ubuntu 16.04.

!528 - #911: qp and pq: set console size in q when running ptpython scripts.

!535 - #910: qp: exit from q) prompt on Ctrl-D.

!536 - #912: qp: report error and exit if pre-loading fails.

Documentation:

!537 - #909: Added a guide on installing PyQ on Ubuntu.

!533 - #914: Use new kx.code.com.

PyQ 4.0.1 ¶

Released on 2017-03-15

Enhancements:

!509 - #903: Fixed a reference leak in debug build and a gcc 4.8.5 compiler warning.

!505 - #901: Provide a fallback for systems that lack CPU_COUNT, e.g. RHEL 5.

!502 - #899: Corrected integer types on 32-bit systems and added explicit casts when necessary.

Documentation:

!511 - Use locally stored intersphinx inventory.

!506 - #902 Updated README.

PyQ 4.0 ¶

Released on 2017-03-02

New Features:

!365 - #756: Expose okx from k.h in Python.

!376 - #806: Hooked basic prompt toolkit functionality into cmdtloop.

!384 - #809: Implemented the qp script - like pq but start at the q) prompt.

!385 - #806: Add bottom toolbar to q) prompt.

!378 - #809: Implemented ipyq and pq scripts.

!387 - #813: Implemented the @ operator.

!401 - #828: Implemented type-0 list to array conversions.

!402 - #775: Implemented getitem for enumerated lists.

!404 - #833: Implemented K.___sizeof__() method.

!359 - #642: Implement typed constructors and casts

!390 - #815: Implemented the data attribute for the K objects in C.

!396 - #829: Implemented basic nd > 1 case: C contiguous and simple type.

!410 - #840: Implemented shift operators.

!420 - #851: Implemented setm() and m9() in _k.

!422 - #852: Implemented conversion from arbitrary sequences to K.

!428 - #835: Implemented K.__rmatmul__.

!432 - #856: Implemented file system path protocol for file handles.

!435 - #598: Added support for pathlib2.

!437 - #855: Added support for complex numbers.

!439 - #791: Implemented _n attribute for K objects.

!467 - #873: Implement K.timespan(int) constructor

Enhancements:

!297 - #752: More datetime64 to q conversions

!314 - #672: Improve calling Python functions from q

!315 - #766: Defined the __dir__ method for class _Q.

!316 - #767: Make “exec” method callable without trailing _ in PY3K

!330 - #779: Reimplemented new and call in C

!352 - #792: Restore support for KXVER=2.

!354 - #796: Conversion of “small” kdb+ longs will now produce Python ints under Python 2.x.

!355 - #769: Restore array struct

!358 - #798: Revisit array to k conversions.

!375 - #791: K object attributes

!377 - #807: Clean up and reuse the list of q functions between K and q

!379 - #808: Clean up pyq namespace

!380 - #791: Replaced .inspect(b’t’) with ._t.

!381 - #806: Return to Python prompt when Control-D or Control-C is pressed.

!382 - #659: Get rid of KXVER in the C module name.

!383 - #810: Clean up q namespace

!388 - #779, #798: Removed unused variables.

!389 - #818: Use fully qualified name for the internal K base class.

!391 - #816: temporal data lists to array conversion

!394 - #823: Preload kdb+ database if provided on pyq command line.

!397 - #830: Make sure strings obtained from q symbols are interned.

!398 - #806: Added a simple word completer.

!399 - #819: Make K.string accept unicode in Python 2.x and bytes in Python 3.x.

!400 - #806: Clean python exit on \

!405 - #836: Reimplemented K.__bool__ in C.

!406 - #837: Reimplemented K.__get__ in C.

!408 - #838: Install sphinxcontrib-spelling package in the deploy stage.

!413 - #842: K to bytes conversion

!423 - #852: Added special treatment of symbols in _from_sequence(); allow mixed lists in conversions.

!424 - #852: Fixed the case of empty sequence. Use K._from_sequence as a tuple converter.

!425 - #852: Remove dict workaround

!426 - #853: Make dict[i] consistent with list[i]

!429 - #854: Walk up the mro to discover converters

!430 - #608: Return K from mixed K - numpy array operations.

!431 - #679: Fixed conversion of enumeration scalars into strings.

!442 - #808: pyq globals clean-up

!443 - #858: The “nil” object does not crash show() anymore.

!444 - #817: Clip int(q(‘0N’)) to -0W when building K.long lists.

!445 - #857: Adverbs revisited

!446 - #861: Allow unary and binary ops and projections to be called with keywords.

!447 - #857: Use vs (sv) instead of each_left(right).

!449 - #864: Corrected the date bounds and added a comprehensive test.

!450 - #865: Fixed x.char cast

!455 - #863: Allow out-of-range scalar dates to be converted to ±0Wd.

!460 - #870: K.timestamp bug

!470 - #874: K.boolean redesign

!477 - #875: Make sure bool(enum scalar) works in various exotic scenarios.

!481 - #881: K._ja bug

!483 - #850: Use py2x converters in atom constructors.

!485 - #882: Return 0w on overflow

!486 - #883: Make boolean constructor stricter : Allow only integer-like values in K._kb().

!487 - #884: Detect mappings in typed constructors.

!490 - #841: Fixed mv_release.

!492 - #886: Fix two bugs in pyq executable; improve setup tests

!494 - #891: Fix crash in K._kc()

CI and tests improvements:

!349, !456, !456, !471, !457, !459, !464 - #695, #793, #867: Improvements in code coverage reporting.

!350 - #794: Run pycodestyle in tox.

!411 - #827: Use Python 3.6 and 2.7.13 in CI.

!415, !451 - #845: Use Docker for CI

!433 - #679: Fixed test on kdb+ 2.x.

!436 - Add numpy 1.12 to the CI tests.

!440 - #803: keywords and descriptions from code.kx.com.

!452 - Add kdb+ 3.5t to the CI tests.

!461 - #866: Added tests and fixed timestamp range.

!475 - Use random CPU and limit one CPU core per job in CI.

!489 - #885: Reformatted code in test files.

!318, !351, !474, !478, !479, !480, !484, !488, !491 - #768: Improve C code test coverage.

Documentation:

!341 - #789: Updated README: Test section.

!353 - #764: simpler docstrings

!360 - #764: Reorganized documentation. Minor fixes.

!361 - #764: More docs improvements

!362 - #764: docs improvements

!366 - #764: test docs build in tox

!371 - #803: Updated 32-bit Python/PyQ guide to use Python 3.6.

!374 - #804: doc style improvements

!373 - #764 and #777 table to array and sphinx doctest

!392 - #820: What’s New in 4.0

!403 - #832: spellcheck docs

!407 - #838: Add doc path to sys.path in conf.py.

!409 - #803 Docs additions

!412 - #803: Make documentation testing a separate stage.

!427 - #803: more docs

!448 - #803: More docs

!469 - #871: More docs

!438 - #854 (#820): Added a what’s new entry about named tuples conversion.

!472 - #803: Added adverbs documentation

!493 - #803: Document calling Python from q

!462, !463, !465, !468, !473 - Logo improvements

Setup:

!337 - #782: Use install extras to install requirements.

!339 - #782: Use extras instead of deps in tox.ini.

!340 - #788: Add ipython extras.

PyQ 3.8.4 ¶

Released on 2017-01-13

!414 - #843: Setup should not fail if VIRTUAL_ENV is undefined
!395 - #825: Fixed uninitialized “readonly” field in getbuffer

PyQ 3.8.3 ¶

Released on 2016-12-15

!357 - #799: Several documentation fixes.
!368 - #802: Setup should not fail if $VIRTUAL_ENV/q does not exist.

PyQ 3.8.2 ¶

Released on 2016-12-01

Documentation improvements:

!306 - #763: Update README.md - fixed INSTALL link.

!312 - Fix formatting; ?? -> date of the release in the CHANGELOG.

!322 - Fixed formatting error in the documentation.

!324 - #744: use pip to install from the source.

!338 - #785: Virtual environment setup guide.

!346 - #764: docs improvements

!342 - #787: Added links to rtd documentation.

PyQ executable improvements:

!310 - #761: Allow PyQ executable to be compiled as 32-bit on 64-bit platform.

!329 - #646: Print PyQ, KDB+ and Python versions if –versions option is given to pyq.

!332 - #646: Print full PyQ version.

!333 - #781: Find QHOME when q is installed next to bin/pyq but no venv is set.

!336 - #783: Fixed a bug in CPUS processing

!345 - #646: Added NumPy version to –versions output.

Other improvements and bug fixes:

!308 - #759: Return an empty slice when (stop - start) // stride < 0.

!320 - #771: Workaround for OrderedDict bug in Python 3.5

!323 - #773: Renamed ipython into jupyter; added starting notebook command.

!326 - #720: Simplified the test demonstrating the difference in Python 2 and 3 behaviors.

!327 - #720: Finalize embedded Python interpreter on exit from q.

!331, !343 - #768: Improve C coverage

Improvement in the (internal) CI:

!305, !309, !311, !321, !335, !347 - Multiple improvements in the CI.

!319 - #770: Run doctests in tox.

PyQ 3.8.1 ¶

Released on 2016-06-21

!292 - #744: Print guessed path of q executable when exec fails.
!293, !294 - #748 Use VIRTUAL_ENV environment variable to guess QHOME.
!301, !295 - #751: Update documentation.
!296 - #750: Fall back on 32-bit version of q if 64-bit version does not run.
!298, !299, !300, !303 - #753: CI Improvements.
!302 - #755: Use preserveEnumerations=1 option to b9 instead of -1.

PyQ 3.8 ¶

Released on 2016-04-26.

!256 - #670: Enable 32-bit CI
!258 - #717 Expose sd0 and sd1 in python.
!259 - #718 Added a test running “q test.p”.
!261 - Use Python 3.4.3 in CI
!272, !273 - #731 Added Python 3.5.0 test environment and other CI improvements.
!263 - #718 More p) tests
!264 - #709 Redirect stderr and stdout to notebook
!271 - #729 Conversion of lists of long integers to q.
!274 - #728 Don’t corrupt existing QHOME while running tox.
!275 - #733 Don’t add second soabi for Python 3.5.
!276 - #734: Added support for enums in memoryview.
!277 - #736: Implemented format() for more scalar types.
!278 - #737 Misleading error message from the list of floats conversion.
!279, !280 - #738 CI improvements
!281 - #611: Updated k.h as of 2016.02.18
!286, !288, !289, !290 - #742 PyQ Documentation
!287 - #745: Automatically generate version.py for PyQ during setup.

PyQ 3.7.2¶

Released on 2015-07-28.

!270 - #726 Reuse dict converter for OrderedDict.
!267 - #724 and #723 numpy <> q conversion fixes.
!266 - #725 Use 001..002 to bracket ANSI escapes.
!265 - #721 Made slicing work properly with associations (dictionaries) and keyed tables.
!260 - #719 Backport python 3 bug fixes.
CI Improvements (!257, !262, !269, !268).

PyQ 3.7.1¶

Released on 2015-02-12.

!244 - #701 Fixed using q datetime (z) objects in format().
!246 - Removed pytest-pyq code. pytest-pyq is now separate package.
!247 - #709 IPython q-magic improvements
!248 - #673 Implemented unicode to q symbol conversion in python 2.x.
!249, !252 - #691 Improved test coverage
!250, !251 - #695 Use Tox as test-runner
!253 - #715 Fixed table size computation in getitem.
!255 - #691 Remove redundant code in slice implementation

PyQ 3.7¶

Released on 2015-01-15.

!222 - #581 Implements conversion of record arrays.
!223 - #680 Fixed int32 conversion bug.
!224 - #681 Fixed datetime bug - freed memory access.
!225 - Added support for numpy.int8 conversion.
!226 - #644 Fixed descriptor protocol.
!227 - #663 Fixed nil repr (again).
!228, !233, !237, !239 - #687 Updates to documentation in preparation to public release.
!229 - #690 Use only major kx version in _k module name.
!230 - #691 Added tests, fixed date/time list conversion.
!232 - #693 Implement pyq.magic.
!234 - #694 Use single source for python 2 and 3. (No 2to3.)
!235 - #674 Added support for nested lists.
!236 - #678 Fixed compiler warnings.
!238 - #657 Make numpy optional.
!240 - #674 Added support for nested tuples.
!241 - #696 Implemented slicing of K objects.
!242 - #699 int and float of non-scalar will raise TypeError.
!243 - #697 Fixed a datetime bug.

PyQ 3.6.2¶

Released on 2014-12-23.

!198 - #654 Restore python 3 compatibility
!211 - #667 Added pyq.c into MANIFEST
!213 - #669 Fixed a crash on Mac
!214 - #590 Implemented numpy date (M8) to q conversion
!215, !216 - #590 Implemented support for Y, M, W, and D date units
!217, !218, !220, !221 - #666 Multiple CI improvements
!219 - #676 Implemented numpy.timedelta64 to q conversion

PyQ 3.6.1¶

Released on 2014-11-06.

!206 - #663 Fixed nil repr
!207 - CI should use cached version of packages
!208 - #665 Allow K objects to be written into ipython zmq.iostream
!209 - Show python code coverage in CI
!210 - #666: Extract C and Python coverage to print in the bottom of the CI run
!212 - Bump version to 3.6.1b1

PyQ 3.6.0¶

Released on 2014-10-23.

!189 - #647 Fix pyq.q() prompt
!190 - CI should use Python 2.7.8
!191 - #648 Boolean from empty symbol should be False
!192 - #634: Moved time converter to C and removed unused converters
!193 - #652 Added __long__ method to K type.
!194 - #653 Allow K integer scalars to be used as indices
!195, !197 - #651 Format for scalar types D, M, T, U, and V.
!196 - #611 Updated k.h to 2014.09.11
!199 - #656 Iteration over K scalars will now raise TypeError.
!200 - #655 Added support for Python 3 in CI
!202 - #571 Added support for uninstalling Q components
!203 - #633 Improve test coverage
!204 - #633 Added boundary and None checks in ja

PyQ 3.5.2¶

Released on 2014-07-03.

!184, !186 - #639 taskset support. Use CPUS variable to assign CPU affinity.
!187 - #641 color prompt
!185 - #640 Restore minimal support for old buffer protocol

PyQ 3.5.1¶

Released on 2014-06-27.

!177, !178 – #631 pyq is binary executable, not script and can be used in hashbang.
!179 – #633 Added memoryview tests.
!181 – #636 Moved extension module into pyq package.
!182 – #633 Removed old buffer protocol support.
!183 - #638 Calling q() with no arguments produces an emulation of q) prompt

PyQ 3.5.0¶

Released on 2014-06-20.

!164 – #611 Updated k.h
!165 – #614 Expose jv
!166 – #580 Show with output=str will return string
!167 – #627 Fixed p language
!168 – Fix for pip, PyCharm and OS X
!169 – #629 python.py script was renamed to pyq
!170 – #632 jv reference leak
!171 – #633 C code review
!172 – #634 k new
!173 – #612 Generate C code coverage for CI
!174, !175 – #633 test coverage
!176 – #635 Disable strict aliasing

PyQ 3.4.5¶

Released on 2014-05-27.

614: Expose dj and ktj
620: Empty table should be falsy
622: Convert datetime to “p”, not “z”

PyQ 3.4.4¶

Released on 2014-05-23.

python.q returns correct exit code

PyQ 3.4.3¶

Released on 2014-04-11.

617: Dict Conversion
619: Len Keyed Table

PyQ 3.4.2¶

Released on 2014-04-11.

589: Symbol array roundtripping
592: Properly register py.path.local
594: Support passing additional values to select/update/exec methods.
595: Implement pytest_pyq plugin
596: Implement python dict converter
601: Add support for ^ (fill) operator
602: Fix r-ops for non-commutative operations.
603: Fix unary + and implement unary ~
604: Make all q methods accessible from pyq as attributes
609: Updated k.h to the latest kx version
NUC: Only true division is supported. Use “from __future__ import division” in python 2.x.

PyQ 3.4.1¶

Released on 2014-03-14.

Add support for char arrays #588
PyQ can now be properly installed with pip -r requirements.txt #572

PyQ 3.4¶

Released on 2014-03-07.

Issues fixed: #582, #583, #584, #586
Support dictionary/namespace access by .key
Support ma.array(x) explicit conversion
Add support for comparison of q scalars

PyQ 3.3¶

Released on 2014-02-05.

Issues fixed: #574, #575, #576, #577, #578

PyQ 3.2¶

Released on 2013-12-24.

Issues fixed: #556, #559, #560, #561, #562, #564, #565, #566, #569, #570, #573
NEW: wrapper for python.q to use it under PyCharm

Note: You will need to create symlink from python to python.py in order for this to work, i.e.: ln -s bin/python.py bin/python
Support to use 32-bit Q under 64-bit OS X

PyQ 3.2.0 beta¶

Convert int to KI if KXVER < 3, KJ otherwise
In Python 2.x convert long to KJ for any KXVER

PyQ 3.1.0¶

Released on 2012-08-25.

support Python 3.2
release pyq-3.1.0 as a source archive

2012-08-10¶

basic guid support

PyQ 3.0.1¶

Released on 2012-08-09.

support both q 2.x and 3.x
better setup.py
release pyq-3.0.1 as a source archive

2009-10-23¶

NUC: k3i
K(None) => k(”::”)
K(timedelta) => timespan

2009-01-02¶

Use k(0, ..) instead of dot() and aN() to improve compatibility
Default to python 2.6
Improvements to q script.p
NUC: extra info on q errors

2007-03-30¶

implemented K._ja

0.3¶

Added support for arrays of strings

0.2¶

Implemented iterator protocol.