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https://issues.apache.org/jira/browse/ARROW-3329?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17068090#comment-17068090
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Wes McKinney commented on ARROW-3329:
-------------------------------------

It's easy and safe to install an isolated conda that does not impact your system

Install miniconda locally:

{code}
MINICONDA_URL="https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh";
wget -O miniconda.sh $MINICONDA_URL
bash miniconda.sh -b -p $HOME/local-miniconda
rm -f miniconda.sh
{code}

Then when you want to use conda in a bash/zsh terminal:

{code}
. $HOME/local-miniconda/etc/profile.d/conda.sh
{code}

That's it. I ran these commands just now in a matter of seconds. Can be used 
without affecting any of your system packages. Then you should be able to 
follow the conda instructions in our documentation.

> [Python] Error casting decimal(38, 4) to int64
> ----------------------------------------------
>
>                 Key: ARROW-3329
>                 URL: https://issues.apache.org/jira/browse/ARROW-3329
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Python
>         Environment: Python version : 3.6.5
> Pyarrow version : 0.10.0
>            Reporter: Kavita Sheth
>            Assignee: Jacek Pliszka
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 0.17.0
>
>          Time Spent: 7h
>  Remaining Estimate: 0h
>
> Git issue LInk : https://github.com/apache/arrow/issues/2627
> I want to cast pyarrow table column from decimal(38,4) to int64.
> col.cast(pa.int64())
> Error:
>  File "pyarrow/table.pxi", line 443, in pyarrow.lib.Column.cast
>  File "pyarrow/error.pxi", line 89, in pyarrow.lib.check_status
>  pyarrow.lib.ArrowNotImplementedError: No cast implemented from decimal(38, 
> 4) to int64
> Python version : 3.6.5
>  Pyarrow version : 0.10.0
> is it not implemented yet or I am not using it correctly? If not implemented 
> yet, then any work around to cast columns?



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