Merge remote-tracking branch 'upstream/master' into meuns_master

Only minor conflicts

Author: eric-wieser

.circleci/config.yml

@@ -7,24 +7,44 @@ defaults: &defaults
     - run:
         name: Install
         command: |
-          sudo pip install pytest
-          sudo pip install sympy==1.3
+          sudo pip install -r test_requirements.txt
           sudo pip install -e .
-          sudo pip install pytest-cov
-          if [[ "$CIRCLE_JOB" == "python-2.7" ]]; then sudo pip install ipython==5.8.0 ; fi
-          sudo pip install nbval
-          sudo pip install pytest-xdist
+          if [ -n "$PIP_EXTRA_INSTALLATION" ]; then
+            # deliberately not quoted
+            sudo pip install $PIP_EXTRA_INSTALLATION
+          fi
+          sudo pip check
     - run:
         name: Test
         command: |
-          pytest -n 2 --dist loadscope --cov=galgebra --nbval examples/ipython/ test --current-env --sanitize-with test/.nbval_sanitize.cfg
+          mkdir test-reports
+          pytest -n 2 --dist loadscope --cov=galgebra --nbval examples/ipython/ test --current-env --sanitize-with test/.nbval_sanitize.cfg --junitxml=test-reports/junit.xml
     - run:
         name: Coverage
         when: on_success
         command: |
           sudo pip install codecov
           codecov
+
+    - store_test_results:
+        path: test-reports
+    - store_artifacts:
+        path: test-reports
+
 jobs:
+  "python-3.7-symengine":
+    <<: *defaults
+    environment:
+      PIP_EXTRA_INSTALLATION: numpy symengine==0.5.0
+      USE_SYMENGINE: 1
+    docker:
+      - image: circleci/python:3.7
+  "python-3.7-sympy-1.5":
+    <<: *defaults
+    environment:
+      PIP_EXTRA_INSTALLATION: sympy==1.5
+    docker:
+      - image: circleci/python:3.7
   "python-3.7":
     <<: *defaults
     docker:
@@ -37,10 +57,6 @@ jobs:
     <<: *defaults
     docker:
       - image: circleci/python:3.5
-  "python-3.4":
-    <<: *defaults
-    docker:
-      - image: circleci/python:3.4
   "python-2.7":
     <<: *defaults
     docker:
@@ -50,7 +66,9 @@ workflows:
   version: 2
   build:
     jobs:
+      - "python-3.7-symengine"
+      - "python-3.7-sympy-1.5"
       - "python-3.7"
       - "python-3.6"
-      - "python-3.4"
+      - "python-3.5"
       - "python-2.7"

.mailmap

@@ -0,0 +1,12 @@
+# Prevent git from showing duplicate names with commands like "git shortlog"
+# See the manpage of git-shortlog for details.
+# The syntax is:
+# Name that should be used <email that should be used> Bad name <bad email>
+#
+# You can skip Bad name if it is the same as the one that should be used, and is unique.
+#
+# This file is up-to-date if the command git log --format="%aN <%aE>" | sort -u
+# gives no duplicates.
+
+Alan Bromborsky <[email protected]> brombo <[email protected]>
+Alan Bromborsky <[email protected]> <[email protected]>

.travis.yml

@@ -11,12 +11,9 @@ matrix:
 before_install:
 - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then lsb_release -a ; fi
 install:
-- pip install sympy==1.3
+- pip install -r test_requirements.txt
 - pip install -e .
-- pip install pytest-cov
-- if [[ "$TRAVIS_PYTHON_VERSION" == 2.7 ]]; then pip install ipython==5.8.0 ; fi
-- pip install nbval
-- pip install pytest-xdist
+- pip check
 script:
 - pytest -n 2 --dist loadscope --cov=galgebra --nbval examples/ipython/ test --current-env --sanitize-with test/.nbval_sanitize.cfg
 after_success:

README.md

@@ -108,7 +108,7 @@ Installing GAlgebra
 ### Prerequisites
 
 - Works on Linux, Windows, Mac OSX
-- [Python](https://www.python.org/) 2.7 or 3
+- [Python](https://www.python.org/) 2.7 or >=3.5
 - [SymPy](https://www.sympy.org)
 
 Note: 

doc/changelog.rst

@@ -2,8 +2,23 @@
 Changelog
 =========
 
+- :bug:`151` ``Dop([], ga=ga)`` and ``Sdop([], ga=ga)`` now evaluate to multiplication by zero, not by one.
+  Multiplication by one can as always be spelt ``Dop([(S(1), ga.Pdop_identity)], ga=ga)``.
+- :bug:`177` :class:`~galgebra.mv.Dop` objects that evaluate to ``0`` no longer raise cryptic ``ValueError``\ s when operated on.
+- :support:`175` ``Dop.flatten_one_level`` has been removed, use ``itertools.chain.from_iterable`` for this functionality.
+- :feature:`172` :data:`galgebra.__version__` has been added, which contains the version string.
+- :feature:`164` (and :issue:`169`, :issue:`170`) Sympy 1.5 is officially supported and tested.
+- :support:`167` Python 3.4 is no longer supported.
+- :bug:`165` :func:`galgebra.metric.linear_expand` no longer accepts a mode argument, as this did not work properly.
+  For the old behavior of ``linear_expand(x, mode=True)``, use ``linear_expand_terms(x)`` instead.
+- :bug:`151` (also :issue:`150`) :class:`~galgebra.mv.Dop`, :class:`~galgebra.mv.Sdop`, and :class:`~galgebra.mv.Pdop` no longer have mutating methods.
+  This fixed issues where not only would the laplacian be sometimes calculated incorrectly, but its correctness would vary depending on whether it had been printed!
+- :bug:`134` :attr:`~galgebra.ga.Ga.dot_table_dict` now contains correct values (zero) for scalar keys
+- :bug:`90` :attr:`~galgebra.ga.Ga.blades`, :attr:`~galgebra.ga.Ga.bases`, and :attr:`~galgebra.ga.Ga.indices` now reference the scalar ``S(0)`` as the single grade-0 object. Previously they listed no grade 0 objects.
+- :bug:`81` (also :issue:`180`) Passing coefficients as ``Mv(coefs, 'odd', ga=ga)`` is forbidden.
+- :bug:`80` (also :issue:`57`, :issue:`58`, :issue:`97`) The :class:`galgebra.mv.Mv` constructor no longer silently accepts illegal arguments, and produces better error messages.
 - :feature:`78` :meth:`~galgebra.ga.Ga.grads` now raises a better error when it fails, and is faster.
-- :support:`72` Other internal cleanup
+- :support:`72` Other internal cleanup.
 - :feature:`66` (also :issue:`67`, :issue:`71`) Remove unused code in the public API:
 
   * ``Ga.mul_table``, ``Ga.wedge_table``, ``Ga.dot_table``, ``Ga.left_contract_table``,
@@ -16,10 +31,20 @@ Changelog
 - :bug:`61` Make contraction and Hestenes dot products thread-safe.
   Previously these relied on the :attr:`~galgebra.ga.Ga.dot_mode` setting not being changed mid-operation.
   The :meth:`~galgebra.ga.Ga.dot` method still respects this setting, but is no longer used internally.
-- :bug:`60` Make :meth:`~galgebra.mv.Mv.blade_rep` and :meth:`~galgebra.mv.Mv.base_rep` not mutate the object they are called on.
-  Any code relying on this behavior will need to change from ``x.base_rep()`` to ``x = x.base_rep()``.
+- :bug:`60` (also :issue:`141`) Make the following operations on :class:`galgebra.mv.Mv` non-mutating:
+
+  * :meth:`~galgebra.mv.Mv.blade_rep`
+  * :meth:`~galgebra.mv.Mv.base_rep`
+  * :meth:`~galgebra.mv.Mv.diff`
+  * :meth:`~galgebra.mv.Mv.simplify`
+  * :meth:`~galgebra.mv.Mv.expand`
+  * :meth:`~galgebra.mv.Mv.collect`
+  * ``print(mv)``
+
+  Any code relying on this behavior will need to change from ``x.method()`` to ``x = x.method()``.
+  Note that the latter syntax was always supported even before this change.
+
 - :support:`59` (also :issue:`65`) Make internal helper functions private.
-- :support:`57` (also :issue:`58`) Clean up the ``Mv(name, 'category')`` constructors to produce better error messages.
 - :support:`55` Rename ``*kargs`` to ``*args`` internally, to match convention.
   This has no effect on callers, but makes the docs and source easier to read.
 - :feature:`50` (also :issue:`51`, :issue:`56`) Improve documentation formatting:

examples/LaTeX/groups.tex

@@ -231,7 +231,7 @@ def noneuclidian_distance_calculation():
     W = W.subs(c**2,(C+1)/2)
     W = W.subs(s**2,(C-1)/2)
     W = simplify(W)
-    W = W.subs(1/Binv,Bmag)
+    W = W.subs(Binv,1/Bmag)
     W = expand(W)
 
     print('#%S = \\f{\\sinh}{\\alpha} \\text{ and } C = \\f{\\cosh}{\\alpha}')

examples/LaTeX/latex_check.py

@@ -58,7 +58,7 @@ def main():
     basic_multivector_operations_2D()
 
     # xpdf('simple_test_latex.tex')
-    xpdf('simple_test_latex.tex', pdfprog=None)
+    xpdf('simple_check_latex.tex', pdfprog=None)
     return
 
 if __name__ == "__main__":

examples/LaTeX/simple_check_latex.py

@@ -219,7 +219,7 @@ def noneuclidian_distance_calculation():
     W = W.subs(c**2,(C+1)/2)
     W = W.subs(s**2,(C-1)/2)
     W = simplify(W)
-    W = W.subs(1/Binv,Bmag)
+    W = W.subs(Binv,1/Bmag)
     W = expand(W)
 
     print('#%S = \\f{\\sinh}{\\alpha} \\text{ and } C = \\f{\\cosh}{\\alpha}')

examples/Old Format/latex_check.py

@@ -53,8 +53,8 @@ def main():
 
     R_th = cos(th/2)+I*e_phi*sin(th/2)
     R_th_rev = R_th.rev()
-    print(R_th)
-    print(R_th_rev)
+    print(R_th.trigsimp())
+    print(R_th_rev.trigsimp())
 
     e_r = (R_th*R_phi*ex*R_phi_rev*R_th_rev).trigsimp()
 

examples/Terminal/rotations.py

@@ -228,7 +228,7 @@ def noneuclidian_distance_calculation():
     W = W.subs(c**2,(C+1)/2)
     W = W.subs(s**2,(C-1)/2)
     W = simplify(W)
-    W = W.subs(1/Binv,Bmag)
+    W = W.subs(Binv,1/Bmag)
     W = expand(W)
 
     print('S = sinh(alpha) and C = cosh(alpha)')