Null check before printing the client response in Python.
Null check before printing the client response in Python.

kumarrus/voltdb,creative-quant/voltdb,VoltDB/voltdb,kobronson/cs-voltdb,creative-quant/voltdb,creative-quant/voltdb,deerwalk/voltdb,wolffcm/voltdb,migue/voltdb,ingted/voltdb,paulmartel/voltdb,VoltDB/voltdb,kumarrus/voltdb,flybird119/voltdb,migue/voltdb,wolffcm/voltdb,migue/voltdb,zuowang/voltdb,kobronson/cs-voltdb,migue/voltdb,wolffcm/voltdb,zuowang/voltdb,wolffcm/voltdb,flybird119/voltdb,migue/voltdb,paulmartel/voltdb,paulmartel/voltdb,simonzhangsm/voltdb,flybird119/voltdb,VoltDB/voltdb,wolffcm/voltdb,zuowang/voltdb,VoltDB/voltdb,deerwalk/voltdb,kumarrus/voltdb,deerwalk/voltdb,migue/voltdb,ingted/voltdb,flybird119/voltdb,simonzhangsm/voltdb,paulmartel/voltdb,ingted/voltdb,kumarrus/voltdb,kobronson/cs-voltdb,deerwalk/voltdb,wolffcm/voltdb,migue/voltdb,flybird119/voltdb,paulmartel/voltdb,simonzhangsm/voltdb,ingted/voltdb,deerwalk/voltdb,migue/voltdb,creative-quant/voltdb,zuowang/voltdb,ingted/voltdb,VoltDB/voltdb,wolffcm/voltdb,creative-quant/voltdb,kobronson/cs-voltdb,zuowang/voltdb,creative-quant/voltdb,kobronson/cs-voltdb,ingted/voltdb,deerwalk/voltdb,kumarrus/voltdb,creative-quant/voltdb,creative-quant/voltdb,paulmartel/voltdb,kobronson/cs-voltdb,zuowang/voltdb,paulmartel/voltdb,deerwalk/voltdb,flybird119/voltdb,zuowang/voltdb,kumarrus/voltdb,simonzhangsm/voltdb,ingted/voltdb,simonzhangsm/voltdb,zuowang/voltdb,ingted/voltdb,VoltDB/voltdb,kobronson/cs-voltdb,kobronson/cs-voltdb,kumarrus/voltdb,flybird119/voltdb,deerwalk/voltdb,simonzhangsm/voltdb,paulmartel/voltdb,VoltDB/voltdb,simonzhangsm/voltdb,kumarrus/voltdb,simonzhangsm/voltdb,flybird119/voltdb,wolffcm/voltdb