formatters.py 文件源码

def catch_format_error(method, self, *args, **kwargs):
    """show traceback on failed format call"""
    try:
        r = method(self, *args, **kwargs)
    except NotImplementedError:
        # don't warn on NotImplementedErrors
        return None
    except Exception:
        exc_info = sys.exc_info()
        ip = get_ipython()
        if ip is not None:
            ip.showtraceback(exc_info)
        else:
            traceback.print_exception(*exc_info)
        return None
    return self._check_return(r, args[0])