def _print(self, pre, col, s, *args, **kwarg):
        from textwrap import wrap
        if args:
            s = s % args
        if kwarg:
            s = s % kwarg
        for i in wrap(s, 95):
            self.output.write(pre + i + '\n')
        self.output.flush()
Interpolates s with args/kwarg and prints on stderr, when debug == True.
dataset/ETHPy150Open philipbergen/zero/py/zero/__init__.py/ZeroSetup._print