Nu har jag gjort lite ändringar i koden, framförallt att "trasiga" värden inte loggas och att värdena loggas exakt prick varje minut(inte med sleep-fördröjning som tidigare). Problemet verkar vara att flyttals jämförelser i python är opålitliga.
Kod: Markera allt
mport datetime;
import time;
import commands
def readone():
	tfile = open("/sys/bus/w1/devices/28-0000040db5a9/w1_slave")
	text = tfile.read()
	tfile.close()
	secondline = text.split("\n")[1]
	temperaturedata = secondline.split(" ")[9]
	temperature = float(temperaturedata[2:])
	temperature = temperature / 1000
	if temperature == -0.062:
		return("#error")
	else:
		return(temperature)
def readtwo():
        tfile = open("/sys/bus/w1/devices/28-0000040de8fc/w1_slave")
        text = tfile.read()
        tfile.close()
        secondline = text.split("\n")[1]
        temperaturedata = secondline.split(" ")[9]
	temperature = float(temperaturedata[2:])
        temperature = temperature / 1000
	if temperature  == -0.062:
		return("#error")
	else:
	        return(temperature)
def getdate():
	date = datetime.datetime.now()
	return(unicode(date.replace(microsecond=0)))
def logg():
	if readtwo() == -0.062 or readone() == -0.062:
		print "error!"
		file = open("logg.txt", "a")
		file.write("#ERROR")
		file.write("\n")
	else:
		file = open("logg.txt", "a")
                file.write(str(getdate()))
                file.write(" ")
                file.write(str(readone()))
                file.write(" ")
                file.write(str(readtwo()))
                file.write("\n")
		
def copy():
		commands.getstatusoutput('gnuplot logg.pg')
		commands.getstatusoutput('gnuplot logg3d.pg')
		commands.getstatusoutput('gnuplot logg3h.pg')
		commands.getstatusoutput('gnuplot logg1d.pg')
   	        commands.getstatusoutput('gnuplot logg7d.pg')
def main():
	
	while 1 > 0:
		d = datetime.datetime.now()
		if d.second == 59:
	 		logg();
			copy();
main();
				


