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https://issues.apache.org/jira/browse/CASSANDRA-15572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17076048#comment-17076048
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Yuki Morishita commented on CASSANDRA-15572:
--------------------------------------------

I think we can just commit the patch and see if we can progress further to 
explore python 3.7+.

If we need to patch cqlsh.bat, I will create the separate ticket.

> `object of type 'NoneType' has no len()` error in cqlsh with python 3
> ---------------------------------------------------------------------
>
>                 Key: CASSANDRA-15572
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15572
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: Tool/cqlsh
>            Reporter: Yuki Morishita
>            Assignee: Yuki Morishita
>            Priority: Normal
>
> Looks like in Python 3, webbrowser._tryorder can be NoneType and throw error 
> like below:
> {code}
> Traceback (most recent call last):
>   File ".\bin\cqlsh.py", line 99, in <module>
>     if len(webbrowser._tryorder) == 0:
> TypeError: object of type 'NoneType' has no len()
> {code}



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