def warn_with_traceback(message, category, filename, lineno, file=None,
    line=None):
    log = file if hasattr(file, 'write') else sys.stderr
traceback.print_stack(file=log)
log.write(warnings.formatwarning(message, category, filename, lineno, line))
warnings.showwarning = warn_with_traceback
Get Traceback of warnings