test_symmetry_ops for TestMagneticSpaceGroup of symmetry.maggroups is failing

[DanielYang59]

After fixing assert_str_content_equal implementations in #4205, noticed the following test for TestMagneticSpaceGroup of symmetry.maggroups is failing.

Note: to recreate the following failures, you have to pull the assert_str_content_equal fix from #4205.

cc @mkhorton

pytest tests/symmetry/test_maggroups.py::TestMagneticSpaceGroup::test_symmetry_ops

E           AssertionError: Strings are not equal (whitespaces ignored):
E           ===================== Actual =====================
E           x, y, z, +1
E           -x+3/4, -y+3/4, z, +1
E           -x, -y, -z, +1
E           x+1/4, y+1/4, -z, +1
E           x, -y+3/4, -z+3/4, -1
E           -x+3/4, y, -z+3/4, -1
E           -x, y+1/4, z+1/4, -1
E           x+1/4, -y, z+1/4, -1
E           x, y+1/2, z+1/2, +1
E           -x+3/4, -y+1/4, z+1/2, +1
E           -x, -y+1/2, -z+1/2, +1
E           x+1/4, y+3/4, -z+1/2, +1
E           x, -y+1/4, -z+1/4, -1
E           -x+3/4, y+1/2, -z+1/4, -1
E           -x, y+3/4, z+3/4, -1
E           x+1/4, -y+1/2, z+3/4, -1
E           x+1/2, y, z+1/2, +1
E           -x+1/4, -y+3/4, z+1/2, +1
E           -x+1/2, -y, -z+1/2, +1
E           x+3/4, y+1/4, -z+1/2, +1
E           x+1/2, -y+3/4, -z+1/4, -1
E           -x+1/4, y, -z+1/4, -1
E           -x+1/2, y+1/4, z+3/4, -1
E           x+3/4, -y, z+3/4, -1
E           x+1/2, y+1/2, z, +1
E           -x+1/4, -y+1/4, z, +1
E           -x+1/2, -y+1/2, -z, +1
E           x+3/4, y+3/4, -z, +1
E           x+1/2, -y+1/4, -z+3/4, -1
E           -x+1/4, y+1/2, -z+3/4, -1
E           -x+1/2, y+3/4, z+1/4, -1
E           x+3/4, -y+1/2, z+1/4, -1
E           ==================== Expected ====================
E           x, y, z, +1
E           -x+3/4, -y+3/4, z, +1
E           -x, -y, -z, +1
E           x+1/4, y+1/4, -z, +1
E           x, -y+3/4, -z+3/4, -1
E           -x+3/4, y, -z+3/4, -1
E           -x, y+1/4, z+1/4, -1
E           x+1/4, -y, z+1/4, -1
E           x, y+1/2, z+1/2, +1
E           -x+3/4, -y+5/4, z+1/2, +1
E           -x, -y+1/2, -z+1/2, +1
E           x+1/4, y+3/4, -z+1/2, +1
E           x, -y+5/4, -z+5/4, -1
E           -x+3/4, y+1/2, -z+5/4, -1
E           -x, y+3/4, z+3/4, -1
E           x+1/4, -y+1/2, z+3/4, -1
E           x+1/2, y, z+1/2, +1
E           -x+5/4, -y+3/4, z+1/2, +1
E           -x+1/2, -y, -z+1/2, +1
E           x+3/4, y+1/4, -z+1/2, +1
E           x+1/2, -y+3/4, -z+5/4, -1
E           -x+5/4, y, -z+5/4, -1
E           -x+1/2, y+1/4, z+3/4, -1
E           x+3/4, -y, z+3/4, -1
E           x+1/2, y+1/2, z, +1
E           -x+5/4, -y+5/4, z, +1
E           -x+1/2, -y+1/2, -z, +1
E           x+3/4, y+3/4, -z, +1
E           x+1/2, -y+5/4, -z+3/4, -1
E           -x+5/4, y+1/2, -z+3/4, -1
E           -x+1/2, y+3/4, z+1/4, -1
E           x+3/4, -y+1/2, z+1/4, -1