Python unable to install six package

[bhasin85]

pypa/pip#3165

Solution

pip install --ignore-installed six

➜  kylo_api git:(master) ✗ sudo /usr/local/bin/pip install -r requirements.txt
The directory '/Users/ankitbhasin/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/Users/ankitbhasin/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Requirement already satisfied: certifi>=14.05.14 in /Library/Python/2.7/site-packages (from -r requirements.txt (line 1))
Collecting six>=1.10 (from -r requirements.txt (line 2))
  Downloading six-1.11.0-py2.py3-none-any.whl
Collecting python_dateutil>=2.5.3 (from -r requirements.txt (line 3))
  Downloading python_dateutil-2.6.1-py2.py3-none-any.whl (194kB)
    100% |████████████████████████████████| 194kB 1.1MB/s 
Collecting setuptools>=21.0.0 (from -r requirements.txt (line 4))
  Downloading setuptools-38.2.4-py2.py3-none-any.whl (489kB)
    100% |████████████████████████████████| 491kB 652kB/s 
Requirement already satisfied: urllib3>=1.15.1 in /Library/Python/2.7/site-packages (from -r requirements.txt (line 5))
Collecting configparser (from -r requirements.txt (line 6))
  Downloading configparser-3.5.0.tar.gz
Installing collected packages: six, python-dateutil, setuptools, configparser
  Found existing installation: six 1.4.1
    DEPRECATION: Uninstalling a distutils installed project (six) has been deprecated and will be removed in a future version. This is due to the fact that uninstalling a distutils project will only partially uninstall the project.
    Uninstalling six-1.4.1:
Exception:
Traceback (most recent call last):
  File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/basecommand.py", line 215, in main
    status = self.run(options, args)
  File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/commands/install.py", line 342, in run
    prefix=options.prefix_path,
  File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/req/req_set.py", line 778, in install
    requirement.uninstall(auto_confirm=True)
  File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/req/req_install.py", line 754, in uninstall
    paths_to_remove.remove(auto_confirm)
  File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/req/req_uninstall.py", line 115, in remove
    renames(path, new_path)
  File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/utils/__init__.py", line 267, in renames
    shutil.move(old, new)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 302, in move
    copy2(src, real_dst)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 131, in copy2
    copystat(src, dst)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 103, in copystat
    os.chflags(dst, st.st_flags)
OSError: [Errno 1] Operation not permitted: '/tmp/pip-x5bCl3-uninstall/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/six-1.4.1-py2.7.egg-info'