terminalwriter.py 文件源码

def should_do_markup(file):
    if os.environ.get('PY_COLORS') == '1':
        return True
    if os.environ.get('PY_COLORS') == '0':
        return False
    return hasattr(file, 'isatty') and file.isatty() \
           and os.environ.get('TERM') != 'dumb' \
           and not (sys.platform.startswith('java') and os._name == 'nt')