Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/home/scorbie/.golly/golly_clip.py", line 2, in <module>
sys.stderr.flush()
AttributeError: StderrCatcher instance has no attribute 'flush'
The error happens because Golly redefines sys.stderr to an internal class (StderrCatcher) that captures all error messages in a string that Golly can then display in a dialog box.
You could probably avoid the error by doing something like "sys.stderr.flush = pass" after importing sys.