---
- branch: MAIN
  date: Wed May 12 08:42:42 UTC 2021
  files:
  - new: '1.29'
    old: '1.28'
    path: pkgsrc/math/py-sympy/Makefile
    pathrev: pkgsrc/math/py-sympy/Makefile@1.29
    type: modified
  - new: '1.21'
    old: '1.20'
    path: pkgsrc/math/py-sympy/PLIST
    pathrev: pkgsrc/math/py-sympy/PLIST@1.21
    type: modified
  - new: '1.19'
    old: '1.18'
    path: pkgsrc/math/py-sympy/distinfo
    pathrev: pkgsrc/math/py-sympy/distinfo@1.19
    type: modified
  id: 20210512T084242Z.45648ef8d29c0614481a61920ce75671b2e91fdb
  log: "py-sympy: updated to 1.8\n\n1.8:\n\nBackwards compatibility breaks and deprecations\n\nPlease
    manually add any backwards compatibility breaks or deprecations here, in addition
    to the automatic listing below.\n\nassumptions\n\nAskHandler(), register_handler()
    and remove_handler() are deprecated. Handler now must be multipledispatch instance.\nparsing\n\nParsing
    of \"Q\" returns AssumptionKeys instance in assumptions module. This means that
    sympify(\"Q\") will no longer return a symbol.\nChanges\n\nassumptions\n\nQ.infinite
    now correctly evaluates to True for oo, -oo, and zoo.\n\nAssumption predicates
    now correctly evaluates to None for S.NaN.\n\nRelational objects do not need to
    be wrapped by Q.is_true to be asked or refined anymore\n\nQ.is_true wrapping over
    AppliedPredicate now just return the argument.\n\nrefine arg(x) when x is real
    and nonzero\n\nassumptions/relation module is introduced. This module implements
    binary relation as predicate.\n\nAskHandler(), register_handler() and remove_handler()
    are deprecated. Handler now must be multipledispatch instance.\n\nPredicate now
    uses a single handler which is multipledispatch instance.\n\nPredicate can now
    take multiple arguments.\n\nPredicate(\"...\") now returns UndefinedPredicate
    instance. To define a predicate, you must make a subclass of Predicate.\n\ncalculus\n\nUsing
    maximum with a piecewise expression over a domain no longer fails due to a bug
    fix in Piecewise.as_expr_set_pairs.\ncodegen\n\nallowing for multi-dimensional
    arrays as arguments/locals in c code generation\n\ncreate_expand_pow_optimization
    is now customizable with respect to requirement on base.\n\nSupport flattening
    of elementwise additions of array expressions.\n\nFixes to array-expressions in
    order to properly work with ZeroArray and ZeroMatrix.\n\nFixing matrix expression
    recognition from array-expressions.\n\nMinor fixes to the way the AST of array
    expressions is built\n\nAdd normalization of CodegenArrayDiagonal when it's nested
    with CodegenArrayPermuteDims and CodegenArrayContraction.\n\nIncreased support
    for the normalization of array expressions and permutations of indices.\n\nparse_matrix_expression(
    ) is now able to parse traces of matrices.\n\ncombinatorics\n\nAdded a section
    to the permutation docs about containment in permutation groups.\nconcrete\n\nImproved
    infinite summation capability by adding residue formula.\nA bug leading to incorrect
    evaluation of a summation of an exponential function was fixed.\ncore\n\nFixed
    a bug in Pow._eval_nseries that added Order terms to exact expansions\n\nFixed
    a bug in Expr.round that could lead to infinite recursion in integrate.\n\nRemoved
    deprecated ClassRegistry\n\nget_integer_part no longer has a threshold on the
    approximation to closest integer based on difference, allowing floor to give more
    accurate results for smaller evalf precisions also\n\nA bug causing match to fail
    for expressions with different signs was fixed. Previously this resulted in solve
    raising an exception for some inputs.\n\nMake S(0.0) == S.false return False\n\n.refine()
    method is moved from Expr to Basic.\ngcd correctly handles unevaluated Mul\n\nFixed
    a bug leading to infinite recursion in the old assumptions under evaluate(False).\n\nFixed
    _eval_is_zero() functionality when imaginary numbers are involved.\n\nKind classification
    of objects is introduced. This feature is experimental, and can be replaced or
    deleted in the future.\nMake class Eq with sets as arguments work with simplify().\n\nFixed
    a few broken cases of expr.is_integer\n\nfunctions\n\nImplemented Riemann Xi function\n\nriemaan
    xi function\n\nAdded nseries expansion for besselj and bessely\n\nFixed leading
    term calculation of sin functions to handle angles outside (-pi, pi)\n\nAdded
    aseries expansion to error functions\n\nChanges _eval_nseries of Abs to no longer
    return a Piecewise\n\nModified _eval_nseries to handle infinity and added _eval_as_leading_term
    in floor and ceiling\n\nAdded Generalized Incomplete, Generalized Regularized
    and Central Beta functions\n\nAdded _eval_nseries support to sign\n\nFixed assumption
    is_algebraic for exponentials with rational multiples of I*pi to be True.\ngeometry\n\nFix
    AssertError for vertical tangent\nGeometric entities with symbolic coordinates
    will not be printed in SVG.\nintegrals\n\nFixed a bug that led to RecursionError
    in integrals involving hyperbolic functions.\n\nThe heurisch integration method
    was made faster by improvements in the sparse linear systems solver.\n\nA bug
    leading to incorrect results when integrating Piecewise expressions where a condition
    simplifies to True was fixed.\n\nlogic\n\nsimplify_logic faster in most cases,
    especially for larger expressions.\nrefine() on Boolean objects reduces them to
    true or false if the truth value can be determined.\nmatrices\n\nFixed a bug that
    led to the wrong derivative result in matrix expressions.\n\nThe eye and zero
    functions have been made much faster for large matrices.\n\nAdded two new functions
    upper_triangular and lower_triangular, that return upper and lower triangular
    parts of a matrix.\n\nMinus one, integers, rational numbers multiplied with MatAdd
    is automatically distributed.\n\nAdded function returning Wilkinson matrix\n\nImplemented
    Singular Value decomposition for matrices\n\nImplemented Upper Hessenberg Decomposition
    for a matrix\n\neigenvals, eigenvects without radical solution will be returned
    as CRootOf\nAdded function to calculate Generalized Schur Complement for Block
    Matrices\n\nAdded functions to compute LDU, UDL and LU decompositions for Block
    Matrices\n\nFixed issues with dot product for Matrix.orthogonalize with complex
    vectors.\n\nFixed zero division issues for Matrix.QRdecomposition with zero columns
    coming first than nonzero columns.\n\nAdded a function to compute the permanent
    of a matrix\nChanged behaviour of eq() of class DenseMatrix\n\ndet has a new option
    'gauss-ge' which is much faster in many cases\n\nntheory\n\nAdded documentation
    of ecm and qs functions\n\nFixed a bug in the is_gaussian_prime function for python
    complex numbers (e.g. 1+1j).\n\nprimerange now accepts a single argument i.e.,
    primerange(input_arg) is valid and is same as primerange(2, input_arg).\n\nAdded
    motzkin numbers\n\nparsing\n\nFixed issue with parsing logarithm bases without
    curly braces\nFix parse_expr parsing of expressions with methods when using the
    implicit_multiplications transformation.\n\nInclude the transformed code in the
    error message when the evaluation in parse_expr fails.\n\nExtended the LaTeX parser
    with support for complex conjugates (via \\overline{...}).\n\nLatex parser does
    not evaluate sqrt expressions anymore.\n\nphysics.continuum_mechanics\n\nmake
    beam module compute correctly internal forces\nphysics.optics\n\nFixed bugs related
    to basic operations on TWave\nphysics.quantum\n\nWignerD now evaluates to KroneckerDelta
    in some cases.\nphysics.units\n\nFix bug when input argument to a function is
    an integer\n\nChange default behavior for functions (all function arguments must
    be dimensionless by default)\n\nsin, cos, tan, cot, sec, and csc functions may
    have a dimensionless or angle input argument\n\nExponents must now be dimensionless\n\nConstants
    such as pi and E are now treated as dimensionless (raised exception previously)\n\nNumbers
    with an imaginary component are now treated as dimensionless (raised exception
    previously)\n\nFixed a bug with derived units and dimensions in check_dimensions.\n\nFix
    bug in convert_to returning wrong units in some cases where the linear equation
    system between canonical units is unsolvable.\n\nphysics.vector\n\nFix documentation
    for v1pt_theory\nIntroduced new methods on ReferenceFrame: .orient_axis(), .orient_explicit(),
    .orient_body_fixed(), .orient_space_fixed(), and .orient_quaternion(). .orient()
    calls out to each new method and it is recommended to use the new methods.\nAdded
    .xreplace() to Vector Class.\n\nAdded .xreplace() to Dyadic Class.\n\nAdded .evalf()
    to Vector class\n\nAdded .evalf() to Dyadic class\n\nplotting\n\nAdded handling
    for OverflowError (when plotting functions like exp(1/x)).\npolys\n\nAdded internal
    representation as both dense and sparse matrix\n\nAdded docstrings for Domain
    Matrix class\n\nAdd zeros method to DomainMatrix\n\nA new sparse implementation
    of DomainMatrix is added.\n\nmake is_disjoint strict so that inequalities evaluated
    with solve() return consistent results\n\nThe DomainMatrix class has moved from
    sympy.polys.domainmatrix to sympy.polys.matrices and should now be imported as
    from sympy.polys.matrices import DomainMatrix.\n\nA new polys FiniteExtension
    domain is added.\n\nnumberfields: implemented new algorithm for primitive_element
    in case ex=True.\nadded boilerplate index method for FracField\n\nSolved bug in
    Poly.replace\n\nSolve a bug in polytools.degree.\n\nUse assumption system instead
    of structural equality check in __bool__ method of Expression domain element (fixing
    cases where Poly(...).is_zero would incorrectly return False)\n\nprinting\n\nThe
    pretty printer was made faster when printing large sequences (e.g. tuples, sets
    etc).\n\nFixed a bug which led to latex printing error in singularity function
    expressions.\n\nReplaced the Theano printer with an Aesara printer\n\nSymbols
    with Unicode character names and no underscores, like Ï\x890 now properly pretty
    print subscripts.\n\nFix the printing of the vertical bar in ImageSet, ConditionSet,
    and ComplexRegion so that it is the full height in the pretty and LaTeX printers.\n\nFix
    the tag for the degree of a root with a rational base in MathML output.\n\nirrational
    powers are no longer printed with square root sign, they are printed as fractional
    powers\n\nAllow spreading assignments across multiple symbols when printing multi-member
    objects.\n\nSupport various array constructor types when printing arrays to GLSL.\n\nFixes
    a bug when printing negative expressions to GLSL with operators printed as functions.\n\nSupport
    a custom 0 substitution for printing expressions representing various GLSL types.\n\nmake
    cxxcode correctly print the first argument of Min/Max functions\n\nsets\n\nAdded
    basic denesting functionaility for sets of the form ConditionSet(x, Contains(x,
    ...)).\n\nConditionSet.contains(x) now returns False if x is not in the base set
    (even if its substitution into the condition will cause an error).\n\nFiniteSet.evalf
    with a subs argument now does the substitution. Previously, the argument was ignored.\n\nAdd
    .simplify to FiniteSet.\n\nMake 'is_subset' work for ProductSet\n\nchanged behavior
    of Rationals.contains(float) to indeterminate\n\ntests modified to include new
    behavior\n\n.evalf() precisions with x and FiniteSet(x) is same now.\n\nsimplify\n\nFix
    simplify calls sympify without rational parameter\nTRmorrie now takes powers of
    cos terms into account\nsolvers\n\nFixed a bug in solve that expanded hyperbolic
    function constants to equivalent exp form.\n\nHandle x**r=0 case in invert_complex\n\nFixed
    a bug in solveset, which led to infinite recursion for solving some expressions
    involving radicals.\n\nThe new sparse DomainMatrix implementation is used in linsolve
    to make it much faster when solving large sparse systems of linear equations.\n\nModified
    symbols sorting in solvers._solve_system to ensure solve and linsolve solve the
    same way\n\nAdded solver for 2nd order nonlinear autonomous ODE.\n\nspeed improvement
    in a substep of rsolve_hyper (when computing constant solutions to constant coefficient
    recurrences).\n\nFixed incorrect solutions from rsolve for higher order recurrences\n\nstats\n\nRefactory
    and simplification of sampling backends for random variables.\n\nExpectation can
    now be calculated across multiple Uniform RVs evaluating to zero\n\nImplemented
    Matrix Student's t-distribution\n\nFixed simplification bug in Stochastic Processes
    by introducing abstract Distribution class\n\nAPI changed for StochasticProcess.distribution
    which now expects a timestamp argument instead of RandomIndexedSymbol object.\n\nImplemented
    FlorySchulz Distribution\n\nimplemented LogCauchy Distribution\n\nImplemented
    Logit-Normal probability distribution\n\nFixes cdf computation of Discrete random
    variables by using integer limits\n\nAdded 2 new distributions in frv_types.\n\nadded
    support for fundamental matrix for regular markov chains\n\nAdded support for
    multiple RandomIndexedSymbols in DiscreteMarkovChain\n\ntensor\n\nIntroduced objects
    ArraySymbol and ArrayElement for array expressions equivalent to MatrixSymbol
    and MatrixElement in the matrix expression module.\nshape() function is introduced
    in array module.\nAdd class ZeroArray for array expressions of zero-valued elements.\n\nMake
    Array differentiation(derive_by_array) work with non sympy expressions.\n\nAdded
    tensordiagonal( ) function to perform diagonalization of array expressions.\n\nAdding
    an array with any other type now consistently gives NotImplemented.\nutilities\n\nAdded
    official support for using CuPy to GPU accelerate lambdify functions.\n\nAdded
    Replacer class to simplify the creation of replacement expressions with MatchPy.\n\nAdded
    tests for optional parameter in MatchPy patterns.\n\nAdded string printers for
    MatchPy-compatible wildcards in sympy.utilities.matchpy_connector\n\nAdded WildDot,
    WildPlus and WildStar classes to MatchPy connector. These classes correspond to
    the dot, dot-plut and dot-star expressions in regular expression, but operate
    on SymPy expression trees and are aware of associative and commutative properties,
    features supported through the MatchPy library.\n\nminlex no longer accepts is_set
    or small arguments\n\nminlex and least_rotation now accept key= arguments similar
    to sorted.\n\nvector\n\nFixed a bug with integral over ImplicitRegion objects\nother\n\nExpanding
    documentation to include all class members with docstrings\n"
  module: pkgsrc
  subject: 'CVS commit: pkgsrc/math/py-sympy'
  unixtime: '1620808962'
  user: adam