pip not working after installing another python version

My CentOS 6.5 machine already had Python 2.6 installed in it. Now I just installed Python 2.7. But now, pip is not working. Whenever I run any pip command, it shows following error- File "/usr/bin/pip", line 7, in from pip._internal import main File "/usr/lib/python2.6/site-packages/pip/_internal/__init__.py", line 19, in from pip._vendor.urllib3.exceptions import DependencyWarning File "/usr/lib/python2.6/site-packages/pip/_vendor/urllib3/__init__.py", line 8, in from .connectionpool import ( File "/usr/lib/python2.6/site-packages/pip/_vendor/urllib3/connectionpool.py", line 92 _blocking_errnos = {errno.EAGAIN, errno.EWOULDBLOCK} ^ SyntaxError: invalid syntax I am not understanding what the actual problem is.