Unable to install pip using python on unix - centos

Question

I'm trying to install pip module for python using the command python ./get-pip.py -v but it returns an error that zlib is not available:
[root#centos1 yum.repos.d]# python ./get-pip.py -v
Traceback (most recent call last):
File "./get-pip.py", line 19177, in <module>
main()
File "./get-pip.py", line 194, in main
bootstrap(tmpdir=tmpdir)
File "./get-pip.py", line 82, in bootstrap
import pip
zipimport.ZipImportError: can't decompress data; zlib not available
When I tried to query for zlib, I see that it's already present:
[root#centos1 yum.repos.d]# rpm -qa | grep --color=auto -i 'zlib'
zlib-devel-1.2.3-7.el5
perl-Compress-Zlib-1.42-1.fc6
zlib-1.2.3-7.el5
perl-IO-Zlib-1.04-4.2.1
I tried installing zlib-devel, but still get the same error:
zipimport.ZipImportError: can't decompress data; zlib not available
How do I fix this and proceed in installing pip, as i've a need to proceed with the installation of awscli.

Answer 1

After installing "zlib" manually, after reinstall python again.
git clone https://github.com/madler/zlib.git
cd ${ZLIB_CLONED_DIR}
./configure --prefix=/usr/local
make
sudo make install
Rebuild the Python from source again
cd ${PYTHON_SRC_CODE_DIR}
./configure --prefix=${PYTHON_HOME_DIR}
make
sudo make install

Answer 2

the package python-pip is available in epel repo, install it by running yum install python-pip -y it will resolve any dependencies as well
after installing you can self update pip
pip install --upgrade pip then you can install awscli, pip install awscli