code: def plot(xy, sv, x0, y0, R0, center, R):
      import matplotlib.pyplot as plt
  
      plt.plot(xy[:, 0], xy[:, 1], "k+")
      plt.plot(xy[sv, 0], xy[sv, 1], "bx", mfc="None")
      plt.plot([x0], [y0], "ro")
      plt.plot([center[0]], [center[1]], "bo")
      plt.plot(
          [xy[sv[0], 0], center[0]], [xy[sv[0], 1], center[1]], "b--"
      )
      c = circle(x0, y0, R0)
      plt.plot(c[:, 0], c[:, 1], "r-", linewidth=2)
      c = circle(center[0], center[1], R)
      plt.plot(c[:, 0], c[:, 1], "b-", linewidth=2)
      plt.axis("equal")
      plt.show()
  
imports: from numpy import *
  import matplotlib.pyplot
  from test_circle import sparse_circle, circle, sv, x0, y0, R0
label_desc: Use image node_id 2 for calling a global function with example usage: plot(xy, sv, x0, y0, R0, center, R) without return types