$ wget --no-check-certificate  https://pypi.python.org/packages/source/s/setuptools/setuptools-19.6.tar.gz#md5=c607dd118eae682c44ed146367a17e26
$ tar -zxvf setuptools-19.6.tar.gz
$ cd setuptools-19.6
$ python3 setup.py build
$ python3 setup.py install

RuntimeError: Compression requires the (missing) zlib module

$ yum -y install zlib-devel

$ cd python3.5.2
$ make && make install

$ python3 setup.py build
$ python3 setup.py install

$ wget --no-check-certificate  https://pypi.python.org/packages/source/p/pip/pip-9.0.1.tar.gz#md5=3a73c4188f8dbad6a1e6f6d44d117eeb
$ tar -zxvf pip-8.0.2.tar.gz
$ cd pip-8.0.2
$ python3 setup.py build
$ python3 setup.py install

$ pip -V
pip 9.0.1 from /usr/local/lib/python3.5/site-packages/pip-9.0.1-py3.5.egg (python 3.5)
$ pip3 -V
pip 9.0.1 from /usr/local/lib/python3.5/site-packages/pip-9.0.1-py3.5.egg (python 3.5)

Linux and Unix
~/.cache/pip  # and it respects the XDG_CACHE_HOME directory.

OS X
~/Library/Caches/pip

Windows
%LocalAppData%\pip\Cache