PYCURL ERROR 6 - "Couldn't resolve host

Error:

PYCURL ERROR 6 - "Couldn't resolve host

Solution:

cd /etc/sysconfig/network-scripts
vi ifcfg-eth0

Update NM_CONTROLLED=no

Save the script

After this I restarted the network interface using the following commands:

ifdown eth0
ifup eth0

It will Works