input: 
  def Vector3D_representation(x: float, y: float, z: float) -> str:
      """Create a string representation of a 3D Vector with given coordinates.
      >>> Vector3D_representation(1.0, 2.5, -3.0)
      '(1.0, 2.5, -3.0)'
      >>> Vector3D_representation(0.0, 0.0, 0.0)
      '(0.0, 0.0, 0.0)'
      """
      return "(" + str(x) + ", " + str(y) + ", " + str(z) + ")"
  
output:     return f"({x}, {y}, {z})"