| from sympy.tensor.tensor import TensorIndexType, tensor_indices, TensorHead | |
| from sympy import I | |
| def test_printing_TensMul(): | |
| R3 = TensorIndexType('R3', dim=3) | |
| p, q = tensor_indices("p q", R3) | |
| K = TensorHead("K", [R3]) | |
| assert repr(2*K(p)) == "2*K(p)" | |
| assert repr(-K(p)) == "-K(p)" | |
| assert repr(-2*K(p)*K(q)) == "-2*K(p)*K(q)" | |
| assert repr(-I*K(p)) == "-I*K(p)" | |
| assert repr(I*K(p)) == "I*K(p)" | |