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pull request for python 3 compatibility

This version works with Python 2.7.8 as well as Python 3.2.3 (tested on Ubuntu 12.04). The string Conversion in .__sendData() has been adapted to convert manually to 'utf-8' bytes. 05.11.2014 Thomas Hainmüller, University Freiburg

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arduino
- arduino.py

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`‎arduino/arduino.py‎`

Lines changed: 6 additions & 3 deletions

Original file line number	Diff line number	Diff line change
`@@ -8,7 +8,7 @@ class Arduino(object):`
`8`	`8`
`9`	`9`	`def __init__(self, port, baudrate=115200):`
`10`	`10`	`self.serial = serial.Serial(port, baudrate)`
`11`		`- self.serial.write('99')`
	`11`	`+ self.serial.write(b'99')`
`12`	`12`
`13`	`13`	`def __str__(self):`
`14`	`14`	`return "Arduino is on port %s at %d baudrate" %(self.serial.port, self.serial.baudrate)`
`@@ -56,10 +56,13 @@ def turnOff(self):`
`56`	`56`	`def __sendData(self, serial_data):`
`57`	`57`	`while(self.__getData()[0] != "w"):`
`58`	`58`	`pass`
`59`		`- self.serial.write(str(serial_data))`
	`59`	`+ serial_data = str(serial_data).encode('utf-8')`
	`60`	`+ self.serial.write(serial_data)`
`60`	`61`
`61`	`62`	`def __getData(self):`
`62`		`- return self.serial.readline().rstrip('\n')`
	`63`	`+ input_string = self.serial.readline()`
	`64`	`+ input_string = input_string.decode('utf-8')`
	`65`	`+ return input_string.rstrip('\n')`
`63`	`66`
`64`	`67`	`def __formatPinState(self, pinValue):`
`65`	`68`	`if pinValue == '1':`

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`‎arduino/arduino.py‎`

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