Exception:

Traceback (most recent call last):

  File "/Library/Python/2.7/site-packages/pip-7.1.2-py2.7.egg/pip/basecommand.py", line , in main

    status = self.run(options, args)

  File "/Library/Python/2.7/site-packages/pip-7.1.2-py2.7.egg/pip/commands/install.py", line , in run

    root=options.root_path,

  File "/Library/Python/2.7/site-packages/pip-7.1.2-py2.7.egg/pip/req/req_set.py", line , in install

    requirement.uninstall(auto_confirm=True)

  File "/Library/Python/2.7/site-packages/pip-7.1.2-py2.7.egg/pip/req/req_install.py", line , in uninstall

    paths_to_remove.remove(auto_confirm)

  File "/Library/Python/2.7/site-packages/pip-7.1.2-py2.7.egg/pip/req/req_uninstall.py", line , in remove

    renames(path, new_path)

  File "/Library/Python/2.7/site-packages/pip-7.1.2-py2.7.egg/pip/utils/__init__.py", line , in renames

    shutil.move(old, new)

  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line , in move

    copy2(src, real_dst)

  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line , in copy2

    copystat(src, dst)

  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line , in copystat

    os.chflags(dst, st.st_flags)

OSError: [Errno ] Operation not permitted: '/var/folders/tx/22hzdby50gg4cbnzx_39c5dm0000gn/T/pip-ziJ8uF-uninstall/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/numpy-1.8.0rc1-py2.7.egg-info'

pip install --upgrade pip

sudo pip install numpy --upgrade --ignore-installed

sudo pip install scipy --upgrade --ignore-installed

sudo pip install scikit-learn --upgrade --ignore-installed