o à8Va.ã@sHddlmZddlmZmZmZddlmZdd„Zdd„Z dd „Z d S) é)Úrl)Údo_oneÚexhaustÚswitch)Útop_downcKs6|rttttjgt| ¡Ž¢RŽŽfi|¤ŽSdd„S)aS Full simultaneous exact substitution. Examples ======== >>> from sympy.strategies.tools import subs >>> from sympy import Basic >>> mapping = {1: 4, 4: 1, Basic(5): Basic(6, 7)} >>> expr = Basic(1, Basic(2, 3), Basic(4, Basic(5))) >>> subs(mapping)(expr) Basic(4, Basic(2, 3), Basic(1, Basic(6, 7))) cSs|S)N©)Úxrrú8/usr/lib/python3/dist-packages/sympy/strategies/tools.pyÚszsubs..)rrÚmaprÚsubsÚzipÚitems)ÚdÚkwargsrrr r s *r cOstttt|Žƒfi|¤ŽƒS)zÊ Strategy for canonicalization. Explanation =========== Apply each rule in a bottom_up fashion through the tree. Do each one in turn. Keep doing this until there is no change. )rrr)Zrulesrrrr Úcanons rcCs tt|ƒS)al Apply rules based on the expression type inputs: ruletypes -- a dict mapping {Type: rule} Examples ======== >>> from sympy.strategies import rm_id, typed >>> from sympy import Add, Mul >>> rm_zeros = rm_id(lambda x: x==0) >>> rm_ones = rm_id(lambda x: x==1) >>> remove_idents = typed({Add: rm_zeros, Mul: rm_ones}) )rÚtype)Z ruletypesrrr Útyped#s rN) ÚrZcorerrrZtraverserr rrrrrr Ús