o Š­Rhã@sJddlmZmZmZddlmZGdd„deƒZej ee¡dd„ƒZ dS)é)ÚKindÚ _NumberKindÚ NumberKind)ÚMulcs,eZdZdZef‡fdd„ Zdd„Z‡ZS)Ú VectorKinda Kind for all vector objects in SymPy. Parameters ========== element_kind : Kind Kind of the element. Default is :class:`sympy.core.kind.NumberKind`, which means that the vector contains only numbers. Examples ======== Any instance of Vector class has kind ``VectorKind``: >>> from sympy.vector.coordsysrect import CoordSys3D >>> Sys = CoordSys3D('Sys') >>> Sys.i.kind VectorKind(NumberKind) Operations between instances of Vector keep also have the kind ``VectorKind``: >>> from sympy.core.add import Add >>> v1 = Sys.i * 2 + Sys.j * 3 + Sys.k * 4 >>> v2 = Sys.i * Sys.x + Sys.j * Sys.y + Sys.k * Sys.z >>> v1.kind VectorKind(NumberKind) >>> v2.kind VectorKind(NumberKind) >>> Add(v1, v2).kind VectorKind(NumberKind) Subclasses of Vector also have the kind ``VectorKind``, such as Cross, VectorAdd, VectorMul or VectorZero. See Also ======== sympy.core.kind.Kind sympy.matrices.kind.MatrixKind cstƒ ||¡}||_|S)N)ÚsuperÚ__new__Ú element_kind)Úclsr Úobj©Ú __class__©úS/home/air/sanwanet/backup_V2/venv/lib/python3.10/site-packages/sympy/vector/kind.pyr2szVectorKind.__new__cCs d|jS)NzVectorKind(%s))r )ÚselfrrrÚ__repr__7s zVectorKind.__repr__)Ú__name__Ú __module__Ú __qualname__Ú__doc__rrrÚ __classcell__rrr rrs+rcCs*t|tƒs ||}}t ||j¡}t|ƒS)zš The result of a multiplication between a number and a Vector should be of VectorKind. The element kind is selected by recursive dispatching. )Ú isinstancerrÚ_kind_dispatcherr )Úk1Úk2ÚelemkrrrÚ num_vec_mul:s  rN) Úsympy.core.kindrrrÚsympy.core.mulrrrÚregisterrrrrrÚs   4