I just tried both. Here are the error messages: pip install scikit-image --user Traceback (most recent call last): File "/usr/local/python/2.7.9/gnu/bin/pip", line 9, in <module> load_entry_point('pip==8.1.0', 'console_scripts', 'pip')() File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 568, in load_entry_point File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 2720, in load_entry_point File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 2380, in load File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 2386, in resolve File "/usr/local/python/2.7.9/gnu/lib/python2.7/site-packages/pip-8.1.0-py2.7.egg/pip/__init__.py", line 15, in <module> from pip.vcs import git, mercurial, subversion, bazaar # noqa File "/usr/local/python/2.7.9/gnu/lib/python2.7/site-packages/pip-8.1.0-py2.7.egg/pip/vcs/subversion.py", line 9, in <module> from pip.index import Link File "/usr/local/python/2.7.9/gnu/lib/python2.7/site-packages/pip-8.1.0-py2.7.egg/pip/index.py", line 30, in <module> from pip.wheel import Wheel, wheel_ext File "/usr/local/python/2.7.9/gnu/lib/python2.7/site-packages/pip-8.1.0-py2.7.egg/pip/wheel.py", line 39, in <module> from pip._vendor.distlib.scripts import ScriptMaker File "/usr/local/python/2.7.9/gnu/lib/python2.7/site-packages/pip-8.1.0-py2.7.egg/pip/_vendor/distlib/scripts.py", line 14, in <module> from .compat import sysconfig, detect_encoding, ZipFile File "/usr/local/python/2.7.9/gnu/lib/python2.7/site-packages/pip-8.1.0-py2.7.egg/pip/_vendor/distlib/compat.py", line 31, in <module> from urllib2 import (Request, urlopen, URLError, HTTPError, ImportError: cannot import name HTTPSHandler And in the cloned directory:

cd scikit-image pip install . --user Traceback (most recent call last): File "/usr/local/python/2.7.9/gnu/bin/pip", line 9, in <module> load_entry_point('pip==8.1.0', 'console_scripts', 'pip')() File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 568, in load_entry_point File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 2720, in load_entry_point File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 2380, in load File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line 2386, in resolve File "/usr/local/python/2.7.9/gnu/lib/python2.7/site-packages/pip-8.1.0-py2.7.egg/pip/__init__.py", line 15, in <module> from pip.vcs import git, mercurial, subversion, bazaar # noqa File "/usr/local/python/2.7.9/gnu/lib/python2.7/site-packages/pip-8.1.0-py2.7.egg/pip/vcs/subversion.py", line 9, in <module> from pip.index import Link File "/usr/local/python/2.7.9/gnu/lib/python2.7/site-packages/pip-8.1.0-py2.7.egg/pip/index.py", line 30, in <module> from pip.wheel import Wheel, wheel_ext File "/usr/local/python/2.7.9/gnu/lib/python2.7/site-packages/pip-8.1.0-py2.7.egg/pip/wheel.py", line 39, in <module> from pip._vendor.distlib.scripts import ScriptMaker File "/usr/local/python/2.7.9/gnu/lib/python2.7/site-packages/pip-8.1.0-py2.7.egg/pip/_vendor/distlib/scripts.py", line 14, in <module> from .compat import sysconfig, detect_encoding, ZipFile File "/usr/local/python/2.7.9/gnu/lib/python2.7/site-packages/pip-8.1.0-py2.7.egg/pip/_vendor/distlib/compat.py", line 31, in <module> from urllib2 import (Request, urlopen, URLError, HTTPError, ImportError: cannot import name HTTPSHandler