captain/echo.py
def err(format_msg, *args, **kwargs):
    '''print format_msg to stderr'''
    exc_info = kwargs.pop("exc_info", False)
    stderr.warning(str(format_msg).format(*args, **kwargs), exc_info=exc_info)
def err(format_msg, *args, **kwargs):
    '''print format_msg to stderr'''
    exc_info = kwargs.pop("exc_info", False)
    stderr.warning(str(format_msg).format(*args, **kwargs), exc_info=exc_info)
def err ( format_msg , * args , * * kwargs ) : exc_info = kwargs . pop ( "exc_info" , False ) stderr . warning ( str ( format_msg ) . format ( * args , * * kwargs ) , exc_info = exc_info )
print format_msg to stderr
print format_msg to stderr