code: def get_viewport():
      """
      Returns the current viewport.
      """
      m = (c_int * 4)()
      pgl.glGetIntegerv(pgl.GL_VIEWPORT, m)
      return m
  
imports: import pyglet.gl
  from sympy.core import S
label_desc: Use image node_id 3 for calling a global function with example usage: get_viewport() and returns: m