Unable to launch "Python cqlsh" - ValueError: RE flag setting not allowed in SaferScanner lexicon (0b110010)

Question

Cassandra 版本 2.1.1

Python 版本 3.8

使用 CCM 在一台机器上运行 3 个虚拟 Cassandra 节点。

当运行ning cqlsh 时：获取以下堆栈跟踪。

C:\Users\manjr\.ccm\repository.1.1\bin>python cqlsh
cqlsh:491: SyntaxWarning: "is not" with a literal. Did you mean "!="?
  if custom_prompt is not '':
Traceback (most recent call last):
  File "cqlsh", line 120, in <module>
    from cqlshlib import cqlhandling, cql3handling, pylexotron, sslhandling, async_insert, meter
  File "C:\Users\manjr\.ccm\repository.1.1\bin\..\pylib\cqlshlib\cqlhandling.py", line 21, in <module>
    from . import pylexotron, util
  File "C:\Users\manjr\.ccm\repository.1.1\bin\..\pylib\cqlshlib\pylexotron.py", line 304, in <module>
    class ParsingRuleSet:
  File "C:\Users\manjr\.ccm\repository.1.1\bin\..\pylib\cqlshlib\pylexotron.py", line 305, in ParsingRuleSet
    RuleSpecScanner = SaferScanner([
  File "C:\Users\manjr\.ccm\repository.1.1\bin\..\pylib\cqlshlib\saferscanner.py", line 32, in __init__
    (SUBPATTERN, (len(p)+1, self.subpat(phrase, flags))),
  File "C:\Users\manjr\.ccm\repository.1.1\bin\..\pylib\cqlshlib\saferscanner.py", line 41, in subpat
    return cls.scrub_sub(re.sre_parse.parse(phrase, flags), flags)
  File "C:\Users\manjr\.ccm\repository.1.1\bin\..\pylib\cqlshlib\saferscanner.py", line 59, in scrub_sub
    raise ValueError("RE flag setting not allowed in SaferScanner lexicon (%s)" % (bin(sub.state.flags),))
ValueError: RE flag setting not allowed in SaferScanner lexicon (0b110010)

Answer 1

Cassandra 2.1.1 完全不支持 Python 3.x。您需要安装 Python 2 才能使其成为运行。 Python 3 仅在即将推出的 4.0 中受支持。仅计划在 Cassandra 3.x 中支持 Python 3（请参阅 CASSANDRA-16403）

Unable to launch "Python cqlsh" - ValueError: RE flag setting not allowed in SaferScanner lexicon (0b110010)

Unable to launch "Python cqlsh" - ValueError: RE flag setting not allowed in SaferScanner lexicon (0b110010)

python

cassandra

cqlsh

ccm