code: def DynkinDiagram(t):
      """Display the Dynkin diagram of a given Lie algebra
  
      Works by generating the CartanType for the input, t, and then returning the
      Dynkin diagram method from the individual classes.
  
      Examples
      ========
  
      >>> from sympy.liealgebras.dynkin_diagram import DynkinDiagram
      >>> print(DynkinDiagram("A3"))
      0---0---0
      1   2   3
  
      >>> print(DynkinDiagram("B4"))
      0---0---0=>=0
      1   2   3   4
  
      """
  
      return CartanType(t).dynkin_diagram()
  
label_desc: Use image node_id 1 for calling a global function with example usage: DynkinDiagram(t) and returns: CartanType