new_contents: import numpy as np
  import pylab as pl
  import sys
  sys.path.append('../../lablib')
  import ourgui
  
  filename = ourgui.openFile()
  dtypes = {'names': ['date', 'value', 'unit'],
            'formats': ['f8', 'f4', 'S1']}
  data = np.loadtxt(filename,
                    delimiter=",",
                    dtype=dtypes,
                    )
  date = data['date']
  date -= date[0]
  scale = 60
  date /= scale
  pl.plot(date, data['value'], '.')
  pl.xlabel("time (min)")
  # pl.xlabel("time (h)")
  pl.ylabel("thermistor resistance")
  pl.show()
  
subject: add quickplot