Consider the use of distinct Python processes to try doing that, or 
better try to find a common R version for all scripts.
Loading multiple versions of shared libraries can be little less simple 
than one wishes it. See for examples:
http://stackoverflow.com/questions/228117/loading-multiple-shared-libraries-with-different-versions
L.

On 2012-04-28 19:19, Frank Schmitz wrote:
> I am using rpy2 and R on a cluster and need to access different R versions 
> depending on the respective script I run. Is it possible to dynamically tell 
> rpy where to look for the R libraries. A first attempt to change the 
> LD_LIBRARY paths was unsuccessful.
> Thanks for your help!!
> Frank
>
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Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and 
threat landscape has changed and how IT managers can respond. Discussions 
will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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