问用pip在Mac上安装Pandas

EN

Mac OS Sierra
which python => /usr/bin/python
python --version => Python 2.7.10
Inside "/System/Library/Frameworks/Python.framework/Versions" there is the following
2.3 2.5 2.6 2.7 Current

Collecting pandas
  Using cached pandas-0.19.2-cp27-cp27m-macosx_10_6_intel.macosx_10_9_intel.macosx_10_9_x86_64.macosx_10_10_intel.macosx_10_10_x86_64.whl

Requirement already satisfied: pytz>=2011k in 

/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from pandas)

Requirement already satisfied: python-dateutil in 

/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from pandas)

Requirement already satisfied: numpy>=1.7.0 in 

/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from pandas)

Installing collected packages: pandas

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 784, in install
    **kwargs

  File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/req/req_install.py", line 851, in install
    self.move_wheel_files(self.source_dir, root=root, prefix=prefix)

  File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/req/req_install.py", line 1064, in move_wheel_files
    isolated=self.isolated,

  File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/wheel.py", line 345, in move_wheel_files
    clobber(source, lib_dir, True)

  File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/wheel.py", line 316, in clobber
    ensure_dir(destdir)

  File "/Library/Python/2.7/site-packages/pip-9.0.1-py2.7.egg/pip/utils/__init__.py", line 83, in ensure_dir
    os.makedirs(path)

  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/os.py", line 157, in makedirs
    mkdir(name, mode)

OSError: [Errno 13] Permission denied: '/Library/Python/2.7/site-packages/pandas'