Python去除ASCII控制字符

import re

control_chars = ''.join(map(unichr,range(0, 32)+range(127,160)))
control_char_re=re.compile('[%s]'%re.escape(control_chars))


def remove_control_chars(log, str):
    try:
        return control_char_re.sub('',str)
    except Exception:
        log.warn('remove control chars failed. {}',str)