[ 
https://issues.apache.org/jira/browse/CASSANDRA-15573?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Eduard Tudenhoefner updated CASSANDRA-15573:
--------------------------------------------
    Description: 
Python 3.8 renamed sre_parse.Pattern to sre_parse.State (see 
[https://bugs.python.org/issue34681] and corresponding pull request 
[https://github.com/python/cpython/pull/9310])

So when executing cqlsh with Python 3.8, it throws error:
{code:java}
Traceback (most recent call last):
  File ".\bin\cqlsh.py", line 175, in <module>
    from cqlshlib import cql3handling, cqlhandling, pylexotron, sslhandling, 
cqlshhandling
  File "C:\Users\Yuki 
Morishita\Projects\cassandra\bin\..\pylib\cqlshlib\cql3handling.py", line 19, 
in <module>
    from cqlshlib.cqlhandling import CqlParsingRuleSet, Hint
  File "C:\Users\Yuki 
Morishita\Projects\cassandra\bin\..\pylib\cqlshlib\cqlhandling.py", line 23, in 
<module>
    from cqlshlib import pylexotron, util
  File "C:\Users\Yuki 
Morishita\Projects\cassandra\bin\..\pylib\cqlshlib\pylexotron.py", line 342, in 
<module>
    class ParsingRuleSet:
  File "C:\Users\Yuki 
Morishita\Projects\cassandra\bin\..\pylib\cqlshlib\pylexotron.py", line 343, in 
ParsingRuleSet
    RuleSpecScanner = SaferScanner([
  File "C:\Users\Yuki 
Morishita\Projects\cassandra\bin\..\pylib\cqlshlib\saferscanner.py", line 74, 
in __init__
    s = re.sre_parse.Pattern()
AttributeError: module 'sre_parse' has no attribute 'Pattern'
{code}
h2. Summary of Work that was done

Added a Python 3.8 compatible SaferScanner implementation. Note that the 
changes from CASSANDRA-15659 are required in order to verify that the issue is 
fixed.

  was:
Python 3.8 renamed sre_parse.Pattern to sre_parse.State (see 
https://bugs.python.org/issue34681 and corresponding pull request 
https://github.com/python/cpython/pull/9310)

So when executing cqlsh with Python 3.8, it throws error:

{code}
Traceback (most recent call last):
  File ".\bin\cqlsh.py", line 175, in <module>
    from cqlshlib import cql3handling, cqlhandling, pylexotron, sslhandling, 
cqlshhandling
  File "C:\Users\Yuki 
Morishita\Projects\cassandra\bin\..\pylib\cqlshlib\cql3handling.py", line 19, 
in <module>
    from cqlshlib.cqlhandling import CqlParsingRuleSet, Hint
  File "C:\Users\Yuki 
Morishita\Projects\cassandra\bin\..\pylib\cqlshlib\cqlhandling.py", line 23, in 
<module>
    from cqlshlib import pylexotron, util
  File "C:\Users\Yuki 
Morishita\Projects\cassandra\bin\..\pylib\cqlshlib\pylexotron.py", line 342, in 
<module>
    class ParsingRuleSet:
  File "C:\Users\Yuki 
Morishita\Projects\cassandra\bin\..\pylib\cqlshlib\pylexotron.py", line 343, in 
ParsingRuleSet
    RuleSpecScanner = SaferScanner([
  File "C:\Users\Yuki 
Morishita\Projects\cassandra\bin\..\pylib\cqlshlib\saferscanner.py", line 74, 
in __init__
    s = re.sre_parse.Pattern()
AttributeError: module 'sre_parse' has no attribute 'Pattern'
{code}

h2. Summary of Work that was done

Added a Python 3.8 compatible SafeScanner implementation. Note that the changes 
from CASSANDRA-15659 are required in order to verify that the issue is fixed.


> Python 3.8 fails to execute cqlsh
> ---------------------------------
>
>                 Key: CASSANDRA-15573
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15573
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: Tool/cqlsh
>            Reporter: Yuki Morishita
>            Assignee: Eduard Tudenhoefner
>            Priority: Normal
>              Labels: pull-request-available
>             Fix For: 4.0-alpha
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Python 3.8 renamed sre_parse.Pattern to sre_parse.State (see 
> [https://bugs.python.org/issue34681] and corresponding pull request 
> [https://github.com/python/cpython/pull/9310])
> So when executing cqlsh with Python 3.8, it throws error:
> {code:java}
> Traceback (most recent call last):
>   File ".\bin\cqlsh.py", line 175, in <module>
>     from cqlshlib import cql3handling, cqlhandling, pylexotron, sslhandling, 
> cqlshhandling
>   File "C:\Users\Yuki 
> Morishita\Projects\cassandra\bin\..\pylib\cqlshlib\cql3handling.py", line 19, 
> in <module>
>     from cqlshlib.cqlhandling import CqlParsingRuleSet, Hint
>   File "C:\Users\Yuki 
> Morishita\Projects\cassandra\bin\..\pylib\cqlshlib\cqlhandling.py", line 23, 
> in <module>
>     from cqlshlib import pylexotron, util
>   File "C:\Users\Yuki 
> Morishita\Projects\cassandra\bin\..\pylib\cqlshlib\pylexotron.py", line 342, 
> in <module>
>     class ParsingRuleSet:
>   File "C:\Users\Yuki 
> Morishita\Projects\cassandra\bin\..\pylib\cqlshlib\pylexotron.py", line 343, 
> in ParsingRuleSet
>     RuleSpecScanner = SaferScanner([
>   File "C:\Users\Yuki 
> Morishita\Projects\cassandra\bin\..\pylib\cqlshlib\saferscanner.py", line 74, 
> in __init__
>     s = re.sre_parse.Pattern()
> AttributeError: module 'sre_parse' has no attribute 'Pattern'
> {code}
> h2. Summary of Work that was done
> Added a Python 3.8 compatible SaferScanner implementation. Note that the 
> changes from CASSANDRA-15659 are required in order to verify that the issue 
> is fixed.



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