Python script keeps running when using pyRserve

Question

I am trying to learn how to send a list of lists in Python to R -script which runs statistical methods and gives two or three data frames back to Python

I stumbled across the pyRserve package. I was able to follow the manual in their documentation and everything works great in command line (>>> ). When I run a script, it does not stop. I have installed Rserve package and started its service in RStudio. Below is the code:

import pyRserve
print "here1" #prints this line...
conn = pyRserve.connect(host='localhost', port=6311)
print "here2"
a= conn.eval('3+5')
print a

Can anyone please help?

Answer 1

The (docs) suggest:

$ python
>>> import pyRserve
>>> conn = pyRserve.connect()

And then go on with:

To connect to a different location host and port can be specified explicitly:

pyRserve.connect(host='localhost', port=6311)

This is not meant to indicate that both lines should be run. The second line should be viewed as a potential modifier for the first. So if you need an alternate address or port, then it should look like:

$ python
>>> import pyRserve
>>> conn = pyRserve.connect(host='localhost', port=6311)

Also note this caveat for windows users:

Note On some windows versions it might be necessary to always provide ‘localhost’ for connecting to a locally running Rserve instance.