All python scripts work now under python2 and 3.

distance_sensor.py

@@ -39,7 +39,7 @@
     readout = arduino.analogRead(0)
     mV = (readout/1024.)*5000
     distance = (mV/9.8)*2.54
-    print readout, mV, 'mV', distance, 'cm'
+    print(readout, mV, 'mV', distance, 'cm')
     time.sleep(0.5)
 
 arduino.close()

pyrano.py

@@ -13,7 +13,7 @@
 #You should have received a copy of the GNU General Public License along with 
 #Cyrano. If not, see <http://www.gnu.org/licenses/>.
 
-import serial, sys, termios
+import serial, sys#, termios
 
 INPUT = 0
 OUTPUT = 1
@@ -42,8 +42,8 @@ def __read_word(self):
         return ord(self.serial.read())*256 + ord(self.serial.read())
 
     def __write_word(self, value):
-        self.serial.write(chr(value/256))
-        self.serial.write(chr(value%256))
+        self.serial.write(chr(value//256).encode())
+        self.serial.write(chr(value%256).encode())
 
     def __write_words(self, values):
         for value in values:

test.py

@@ -21,10 +21,10 @@
 
 time.sleep(2) # Device is reset on incoming connection; wait for cyrano to wake
 
-print 'Pin 13: ', arduino.digitalRead(13)   # Read digital 
+print('Pin 13: ', arduino.digitalRead(13))  # Read digital 
 arduino.pinMode(13, OUTPUT)
 arduino.digitalWrite(13, HIGH)              # Write digital 
-print 'Pin 13: ', arduino.digitalRead(13)   # Read digital
-print 'Pin 0:', arduino.analogRead(0)       # Read analog
+print('Pin 13: ', arduino.digitalRead(13))  # Read digital
+print('Pin 0:', arduino.analogRead(0))      # Read analog
 arduino.analogWrite(9, 100)                 # PWM output
 arduino.close()