new_contents: #!/usr/bin/env python
  
  import time
  import logging
  from ina219 import INA219
  
  SHUNT_OHMS = 0.1
  MAX_EXPECTED_AMPS = 0.2
  
  READS = 100
  
  
  ina = INA219(SHUNT_OHMS, MAX_EXPECTED_AMPS, log_level=logging.INFO)
  
  def init():
      ina.configure(ina.RANGE_16V, ina.GAIN_AUTO)
  
  def read():
      for x in range(0, READS):
          v = ina.voltage()
  
  if __name__ == "__main__":
      init()
      start = time.time()
      read()
      finish = time.time()
      elapsed = (finish - start) * 1000000
      print("Read time (average over %d reads): %d microseconds" % (READS, int(elapsed / READS)))
  
subject: Add performance test python file