new_contents: #!/usr/bin/env python
  
  import sys, os, logging, urllib, datetime
  
  def fetchtemp():
  	cmd = '/opt/vc/bin/vcgencmd measure_temp'
  	line = os.popen(cmd).readline().strip()
  	output = line.split('=')[1].split("'")[0]#+' C'
  	return output 
  
  format = "%Y-%m-%d,%H:%M:%S" 
  today = datetime.datetime.today()
  s = today.strftime(format)
  output = s+' '+fetchtemp()+'\n'
  
  with open('/home/pi/bin/plottemp/tempdata.dat', 'a') as f:
  	f.write(output)
  
subject: Create datagen.py