SyntaxError - please help -

[cridder]

i reinstalled and updated from this repo.

any suggestions.

thanks.

pi@raspberrypi:~/Python-Thermal-Printer $ python printertest.py
Traceback (most recent call last):
File "printertest.py", line 3, in
from Adafruit_Thermal import *
File "/home/pi/Python-Thermal-Printer/Adafruit_Thermal.py", line 725
def print(self, *args, **kwargs):
^
SyntaxError: invalid syntax

[zackdotcomputer]

I'm also encountering this - I just commented out that function and the println function for now

[zackdotcomputer]

Ok so what did it for me in the end was changing my calls to use sudo python3 rather than plain-old sudo python even though I have python alias'd to python3 on my machine. IDK enough about linux and/or python to know why, though.

[anyu]

^Right, or change the first line in the sample scripts to #!/usr/bin/python3

When printer.println is called in the examples, the imported printer library tries to overload Python's built-in print with its own. In Python 2, print is a statement rather than a function, so it can't be overloaded and the syntax error is thrown. In Python 3, print changed from a statement to a function, so it can be successfully overloaded.

Python-Thermal-Printer/Adafruit_Thermal.py

Lines 722 to 733 in 3e7be0b

	# Overloading print() in Python pre-3.0 is dirty pool,
	# but these are here to provide more direct compatibility
	# with existing code written for the Arduino library.
	def print(self, *args, **kwargs):
	for arg in args:
	self.write((str(arg)).encode('cp437', 'ignore'))
	# For Arduino code compatibility again
	def println(self, *args, **kwargs):
	for arg in args:
	self.write((str(arg)).encode('cp437', 'ignore'))
	self.write('\n'.encode('cp437', 'ignore'))