即使在导入之后，模块也无法在Python 3中工作

检查安装和导入后得到的以下输出whois模块有人可以帮助解决这个问题吗？
Python 3.6.7 (default, Oct 22 2018, 11:32:17)
[GCC 8.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.

import whois
domain = whois.query('www.google.com')
Traceback (most recent call last):

File "", line 1, in
File "/usr/local/lib/python3.6/dist-packages/whois/__init__.py", line 50, in query

pd = do_parse(do_query(d, force, cache_file, slow_down, ignore_returncode), tld)

File "/usr/local/lib/python3.6/dist-packages/whois/_1_query.py", line 44, in do_query

_do_whois_query(dl, ignore_returncode),

File "/usr/local/lib/python3.6/dist-packages/whois/_1_query.py", line 58, in _do_whois_query

p = subprocess.Popen(['whois', '.'.join(dl)], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)

File "/usr/lib/python3.6/subprocess.py", line 709, in init

restore_signals, start_new_session)

File "/usr/lib/python3.6/subprocess.py", line 1344, in _execute_child

raise child_exception_type(errno_num, err_msg, err_filename)

FileNotFoundError: [Errno 2] No such file or directory: 'whois': 'whois'