code: def test_random_point_within_circle():
      # Test that the random point is within the circle
      for r in np.arange(0, 5, 0.2):
          pts = random_point_within_circle(r)
          assert_(np.linalg.norm(pts) <= r)
  
imports: import numpy
  from numpy.testing import assert_, assert_almost_equal, assert_raises
  from dipy.utils.fast_numpy import random, seed, random_point_within_circle
label_desc: Use image node_id 2 for calling a global function with example usage: test_random_point_within_circle() without return types