code: def rotation_about_vector(v, angle):
      """
      Produce a rotation matrix for an angle in radians about a vector.
      """
      return _rotation_about_vector(v, angle)
  
imports: import numpy
  from matplotlib import _api
label_desc: Use image node_id 2 for calling a global function with example usage: rotation_about_vector(v, angle) and returns: _rotation_about_vector