| from sympy.core.symbol import symbols | |
| from sympy.codegen.abstract_nodes import List | |
| def test_List(): | |
| l = List(2, 3, 4) | |
| assert l == List(2, 3, 4) | |
| assert str(l) == "[2, 3, 4]" | |
| x, y, z = symbols('x y z') | |
| l = List(x**2,y**3,z**4) | |
| # contrary to python's built-in list, we can call e.g. "replace" on List. | |
| m = l.replace(lambda arg: arg.is_Pow and arg.exp>2, lambda p: p.base-p.exp) | |
| assert m == [x**2, y-3, z-4] | |
| hash(m) | |