即使在导入后，模块 whois 也无法在 Python 3 中工作

Question

请检查我在安装和导入 whois 模块后得到的以下输出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

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>>> import whois

>>> domain = whois.query('www.google.com')

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

  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'

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