q.py

   1 from csympy import HashTable
   2 from sympy import *
   3
   4 x = Symbol("x")
   5 y = Symbol("y")
   6 z = Symbol("z")
   7 a = Symbol("x")
   8
   9 #h = HashTable()
  10 #h[x+1] = 3
  11 #h.insert(x, 3)
  12 #h.insert(3, x**2)
  13 #print h[x+1]
  14 #print x+2 in h
  15 #
  16 #print ( x*(x+y)**2 + z*(x+y)**2 ).expand()
  17 #print ( (x+z)*(x+y)**2 ).expand()
  18
  19 #print x*y+x+y+x**2 == y*x + x + y + x**2
  20 e1 = 1+z+x+y*x+5
  21 e2 = 1+x*y+5+x+z
  22 f = e1.args
  23 g = e2.args
  24 print f
  25 print g
  26 print set(f) == set(g)
  27 d = {}
  28 d[e1] = 1
  29 print e1 in d
  30 print e2 in d
  31
  32 e1 = 2*z*x*x**y*5
  33 e2 = 2*x**y*5*x*z
  34
  35 print e1
  36 print e2