minor fixes

scan_faces.py

@@ -60,18 +60,18 @@ def tail(filepath):
 	"""
 	Thanks: https://stackoverflow.com/a/41491521
 	"""
-    with open(filepath, "rb") as f:
+	with open(filepath, "rb") as f:
-        first = f.readline()      # Read the first line.
+		first = f.readline()      # Read the first line.
-        f.seek(-2, 2)             # Jump to the second last byte.
+		f.seek(-2, 2)             # Jump to the second last byte.
-        while f.read(1) != b"\n": # Until EOL is found...
+		while f.read(1) != b"\n": # Until EOL is found...
-            try:
+			try:
-                f.seek(-2, 1)     # ...jump back the read byte plus one more.
+				f.seek(-2, 1)     # ...jump back the read byte plus one more.
-            except IOError:
+			except IOError:
-                f.seek(-1, 1)
+				f.seek(-1, 1)
-                if f.tell() == 0:
+				if f.tell() == 0:
-                    break
+					break
-        last = f.readline()       # Read last line.
+		last = f.readline()       # Read last line.
-    return last
+	return last
 
 # make sure log file exists
 if not os.path.exists(logfile):
@@ -79,9 +79,10 @@ if not os.path.exists(logfile):
 		f.write("{},{},{}".format(time.time(), 0,0))
 
 # get last line of log file and update 'total use' using that.
-last = tail("")
+last = tail(logfile)
 bits = last.split(",")
-totalUse = bits[2]
+totalUse = float(bits[2])
+print "Total use:", totalUse
 
 log = open(logfile, "a")
 
@@ -111,7 +112,7 @@ while True:
 	#~ lcd.message("viewers {:>8}\nview-min. {:>7.2f}".format(len(faces), totalUse/60))
 	lcd.message("{:>7} viewers \n{:>7}view-sec".format(len(faces), si_format(totalUse,precision=1)))
 
-	log.write("{},{},{}".format(time.time(), len(faces), int(totalUse)))
+	log.write("{},{},{}\n".format(time.time(), len(faces), int(totalUse)))
 	log.flush()
 
 	content = urllib2.urlopen("https://artstats.rubenvandeven.com/artwork1/views.php?time=%d&count=%d&total=%d" % (int(time.time()), len(faces), int(totalUse)) ).read()