SyntaxError: invalid syntax

[Junjun-Xu]

Hi,
Thank you very much for providing such excellent software. There were some problems when I was using, Whether using test data or my own data, I will report the following errors. How can this happen?
File "eigenMT.py", line 168
print str(counter) + ' out of ' + str(numgenes) + ' completed ' + '(' + str(round(perc, 3)) + '%)'
^
SyntaxError: invalid syntax

Thanks.
Jun