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https://issues.apache.org/jira/browse/CASSANDRA-10190?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16895682#comment-16895682
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Patrick Bannister commented on CASSANDRA-10190:
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[~djoshi3] the behavior of the {{make_range}} function was different under
Python 2.7 and Python 3.6. For a quick demonstration of the reason, try running
this in a Python 2 interpreter, and then again in a Python 3 interpreter:
{code:python}
assert 0 > None
{code}
Under Python 2 this is fine, but under Python 3, attempting to compare
{{NoneType}} to anything else will throw a {{TypeError}}.
This problem was exposed by failures in the dtest
{{test_writing_with_token_boundaries}} (from cqlsh_tests/test_cqlsh_copy.py).
When the test ran the COPY command with the WITH BEGINTOKEN and WITH ENDTOKEN
options, cqlsh crashed because of the {{TypeError}}.
I like the idea of adding some unit tests around this, I'll do it next time I
get a solid hour to work on this.
> Python 3 support for cqlsh
> --------------------------
>
> Key: CASSANDRA-10190
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10190
> Project: Cassandra
> Issue Type: Improvement
> Components: Legacy/Tools
> Reporter: Andrew Pennebaker
> Assignee: Patrick Bannister
> Priority: Normal
> Labels: cqlsh
> Attachments: coverage_notes.txt
>
>
> Users who operate in a Python 3 environment may have trouble launching cqlsh.
> Could we please update cqlsh's syntax to run in Python 3?
> As a workaround, users can setup pyenv, and cd to a directory with a
> .python-version containing "2.7". But it would be nice if cqlsh supported
> modern Python versions out of the box.
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