code: def main():
      pl = NBPlot()
      for _ in range(10):
          pl.plot()
          time.sleep(0.5)
      pl.plot(finished=True)
  
file_path: matplotlib/galleries/examples/misc/multiprocess_sgskip.py
imports: import multiprocessing
  import time
  import matplotlib.pyplot
  import numpy
label_desc: Use image node_id 1 for calling a global function with example usage: main() without return types