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https://issues.apache.org/jira/browse/CASSANDRA-4090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13245412#comment-13245412
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paul cannon commented on CASSANDRA-4090:
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+1 from me.
> cqlsh can't handle python being a python3
> -----------------------------------------
>
> Key: CASSANDRA-4090
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4090
> Project: Cassandra
> Issue Type: Bug
> Affects Versions: 1.0.8
> Environment: On Archlinux, where Python3 installations are default
> (most distros currently use Python2 as default now)
> {code}
> $ ls -l `which python`
> lrwxrwxrwx 1 root root 7 Nov 21 09:05 /usr/bin/python -> python3
> {code}
> Reporter: Andrew Ash
> Assignee: Andrew Ash
> Attachments: 4090.patch.txt, python3-fix.patch
>
>
> cqlsh fails to run when {{python}} is a Python 3, with this error message:
> {code}
> andrew@spite:~/src/cassandra-trunk/bin $ ./cqlsh
> File "./cqlsh", line 97
> except ImportError, e:
> ^
> SyntaxError: invalid syntax
> andrew@spite:~/src/cassandra-trunk/bin $
> {code}
> The error occurs because the cqlsh script checks for a default installation
> of python that is older than a certain version, but not one newer that is
> incompatible (e.g. Python3). To fix this, I update the logic to only run
> {{python}} if it's a version at least 2.5 but before 3.0 If this version of
> python is in that range then role with it, otherwise try python2.6,
> python2.7, then python2.5 (no change from before).
> This is working on my installation, where {{python}} executes python 3.2.2
> and doesn't break backwards compatibility to distributions that haven't made
> the jump to Python3 as default yet.
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