cli and lib init regex error: bad escape \s at position 0

[chrisdlangton]

The error;

Traceback (most recent call last):
  File "/tmp/.env/lib/python3.7/sre_parse.py", line 1021, in parse_template
    this = chr(ESCAPES[this][1])
KeyError: '\\s'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/tmp/.env/bin/pwhois", line 3, in <module>
    import argparse, pythonwhois, json, datetime, sys
  File "/tmp/.env/lib/python3.7/site-packages/pythonwhois/__init__.py", line 1, in <module>
    from . import net, parse
  File "/tmp/.env/lib/python3.7/site-packages/pythonwhois/parse.py", line 363, in <module>
    registrant_regexes = [preprocess_regex(regex) for regex in registrant_regexes]
  File "/tmp/.env/lib/python3.7/site-packages/pythonwhois/parse.py", line 363, in <listcomp>
    registrant_regexes = [preprocess_regex(regex) for regex in registrant_regexes]
  File "/tmp/.env/lib/python3.7/site-packages/pythonwhois/parse.py", line 205, in preprocess_regex
    regex = re.sub(r"\\s\*\(\?P<([^>]+)>\.\+\)", r"\s*(?P<\1>\S.*)", regex)
  File "/tmp/.env/lib/python3.7/re.py", line 192, in sub
    return _compile(pattern, flags).sub(repl, string, count)
  File "/tmp/.env/lib/python3.7/re.py", line 309, in _subx
    template = _compile_repl(template, pattern)
  File "/tmp/.env/lib/python3.7/re.py", line 300, in _compile_repl
    return sre_parse.parse_template(repl, pattern)
  File "/tmp/.env/lib/python3.7/sre_parse.py", line 1024, in parse_template
    raise s.error('bad escape %s' % this, len(this))
re.error: bad escape \s at position 0

Reproduce;

cd /tmp
virtualenv -p $(which python3) .env
source .env/bin/activate
pip install pythonwhois
pwhois --raw <any domain>

python --version Python 3.7.3
uname -a Linux zhurong 5.0.0-27-generic #28-Ubuntu SMP Tue Aug 20 19:53:07 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

Note: also the same error when using from pythonwhois import get_whois not just the cli executable..

Not sure how to debug this, can't see how I would be the only one effected by this basic usage but based on some quick searches it seems i might be...

[chrisdlangton]

the last version this library worked was pythonwhois==2.2.2

[eyupakpinar]

pip3 install pythonwhois==2.2.2

[yaoyi2008]

I solved it in this way

path/to/pythonwhois/parse.py

Change

import re, sys, datetime, csv, pkgutil

into

import sys, datetime, csv, pkgutil
import regex as re

Rerun, if prompted that the regex module cannot be found, install it

pip install regex