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An escape error of re.py (re.error: bad escape \s at position 0) in "utils/logloader.py" based on Python3.7

See original GitHub issue

Dear authors, Thanks for your work. When I ran the file, “MoLFI_demo.py”, based on Python3.7, I got the error as following.

Traceback (most recent call last):
  File "~/anaconda3/envs/tf/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 "MoLFI_demo.py", line 14, in <module>
    parser.parse(log_file)
  File "../logparser/MoLFI/MoLFI.py", line 41, in parse
    loader = logloader.LogLoader(self.log_format, self.n_workers)
  File "../logparser/utils/logloader.py", line 38, in __init__
    self.headers, self.regex = self._generate_logformat_regex(self.logformat)
  File "../logparser/utils/logloader.py", line 79, in _generate_logformat_regex
    splitter = re.sub(' +', '\s+', splitters[k])
  File "~/anaconda3/envs/tf/lib/python3.7/re.py", line 192, in sub
    return _compile(pattern, flags).sub(repl, string, count)
  File "~/anaconda3/envs/tf/lib/python3.7/re.py", line 309, in _subx
    template = _compile_repl(template, pattern)
  File "~/anaconda3/envs/tf/lib/python3.7/re.py", line 300, in _compile_repl
    return sre_parse.parse_template(repl, pattern)
  File "~/anaconda3/envs/tf/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

I’d be grateful if you could help me.

Issue Analytics

State:
Created 4 years ago
Comments:7 (1 by maintainers)

Top GitHub Comments

17reactions

ankit-nassacommented, Oct 11, 2019

You can also try replacing import re to import regex as re

0reactions

estebanpwcommented, Aug 3, 2022

Just adding this in case someone else has this problem in 2022 when using python 3.8.10. I changed the following line:

splitter = re.sub(' +', '\s+', splitters[k])

splitter = re.sub(' +', '\\\s+', splitters[k])

and that fixed it. Note that I changed this only in the function def _generate_logformat_regex(self, logformat): of the file Spell/Spell.py (because I was using spell) and not in utils/logloader.py.

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