code: def show_stream():
      cli = tw.WatcherClient()
  
      print("Subscribing to event ev_i...")
      s1 = cli.create_stream(
          event_name="ev_i", expr="map(lambda v:math.sqrt(v.val), l)"
      )
      r1 = tw.TextVis(title="L1")
      r1.subscribe(s1)
      r1.show()
  
      print("Subscribing to event ev_j...")
      s2 = cli.create_stream(
          event_name="ev_j", expr="map(lambda v:v.val*v.val, l)"
      )
      r2 = tw.TextVis(title="L2")
      r2.subscribe(s2)
  
      r2.show()
  
      print("Waiting for key...")
  
      utils.wait_key()
  
file_path: tensorwatch/test/simple_log/cli_ij.py
imports: import tensorwatch
  import time
  import math
  from tensorwatch import utils
label_desc: Use image node_id 3 for calling a global function with example usage: show_stream() without return types