input: Write a function to determine if it is possible to get a 3-dimensional vector with a given length by setting appropriate values for its x, y, and z attributes. If it is possible return True else return False. If the given length is zero then return True.
  class Vector3D:
      def __init__(self, x, y, z):
          self.x = x
          self.y = y
          self.z = z
      
      def length(self):
          return (self.x**2 + self.y**2 + self.z**2)**0.5
  
  assert can_create_vector_with_length(Vector3D(3, 4, 0), 5)==True
  assert can_create_vector_with_length(Vector3D(1, 1, 1), 1.7320508075688772)==True
  assert can_create_vector_with_length(Vector3D(2, 3, 4), 5.385164807134504)==False
  assert can_create_vector_with_length(Vector3D(0, 0, 0), 0)==True
  assert can_create_vector_with_length(Vector3D(1, 2, 2), 3)==True
output: def can_create_vector_with_length(vector, length):
      if length == 0:
          return True
      return abs(vector.length() - length) < 1e-9