Errors in installation of matplotlib and pandas on Macbook

[Madhavan Bomidi]

Hello everyone,

I am very new to Macbook and python. I have installed python through MacPorts and when I check if all the packages I required are installed properly, I get the following traceback errors for matplotlib and pandas packages. Can anyone suggest me how I can rectify the same? I tried to check the file "/usr/local/lib/python2.7/site-packages/matplotlib/__init__.py" using vim command but it is empty. Please suggest me ...

Bomidis-MacBook-Pro:~ madhavan$ which python
/usr/local/bin/python
Bomidis-MacBook-Pro:~ madhavan$ which ipython
/usr/local/bin/ipython
Bomidis-MacBook-Pro:~ madhavan$ python -V
Python 2.7.11
Bomidis-MacBook-Pro:~ madhavan$ python
Python 2.7.11 (default, Jun 17 2016, 20:01:51)
[GCC 4.2.1 Compatible Apple LLVM 7.3.0 (clang-703.0.31)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
>>> print(numpy.version.full_version)
1.11.1
>>> import scipy
>>> print(scipy.version.full_version)
0.17.1
>>> import netCDF4
>>> import h5py
>>> import nltk
>>> import matplotlib
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.7/site-packages/matplotlib/__init__.py", line 1131, in <module>
    rcParams = rc_params()
  File "/usr/local/lib/python2.7/site-packages/matplotlib/__init__.py", line 975, in rc_params
    return rc_params_from_file(fname, fail_on_error)
  File "/usr/local/lib/python2.7/site-packages/matplotlib/__init__.py", line 1100, in rc_params_from_file
    config_from_file = _rc_params_in_file(fname, fail_on_error)
  File "/usr/local/lib/python2.7/site-packages/matplotlib/__init__.py", line 1018, in _rc_params_in_file
    with _open_file_or_url(fname) as fd:
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/contextlib.py", line 17, in __enter__
    return self.gen.next()
  File "/usr/local/lib/python2.7/site-packages/matplotlib/__init__.py", line 1000, in _open_file_or_url
    encoding = locale.getdefaultlocale()[1]
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/locale.py", line 543, in getdefaultlocale
    return _parse_localename(localename)
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/locale.py", line 475, in _parse_localename
    raise ValueError, 'unknown locale: %s' % localename
ValueError: unknown locale: UTF-8
>>> import pandas
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Library/Python/2.7/site-packages/pandas/__init__.py", line 39, in <module>
    from pandas.core.api import *
  File "/Library/Python/2.7/site-packages/pandas/core/api.py", line 10, in <module>
    from pandas.core.groupby import Grouper
  File "/Library/Python/2.7/site-packages/pandas/core/groupby.py", line 18, in <module>
    from pandas.core.frame import DataFrame
  File "/Library/Python/2.7/site-packages/pandas/core/frame.py", line 39, in <module>
    from pandas.core.series import Series
  File "/Library/Python/2.7/site-packages/pandas/core/series.py", line 2944, in <module>
    import pandas.tools.plotting as _gfx  # noqa
  File "/Library/Python/2.7/site-packages/pandas/tools/plotting.py", line 27, in <module>
    import pandas.tseries.converter as conv
  File "/Library/Python/2.7/site-packages/pandas/tseries/converter.py", line 7, in <module>
    import matplotlib.units as units
  File "/usr/local/lib/python2.7/site-packages/matplotlib/__init__.py", line 1131, in <module>
    rcParams = rc_params()
  File "/usr/local/lib/python2.7/site-packages/matplotlib/__init__.py", line 975, in rc_params
    return rc_params_from_file(fname, fail_on_error)
  File "/usr/local/lib/python2.7/site-packages/matplotlib/__init__.py", line 1100, in rc_params_from_file
    config_from_file = _rc_params_in_file(fname, fail_on_error)
  File "/usr/local/lib/python2.7/site-packages/matplotlib/__init__.py", line 1018, in _rc_params_in_file
    with _open_file_or_url(fname) as fd:
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/contextlib.py", line 17, in __enter__
    return self.gen.next()
  File "/usr/local/lib/python2.7/site-packages/matplotlib/__init__.py", line 1000, in _open_file_or_url
    encoding = locale.getdefaultlocale()[1]
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/locale.py", line 543, in getdefaultlocale
    return _parse_localename(localename)
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/locale.py", line 475, in _parse_localename
    raise ValueError, 'unknown locale: %s' % localename
ValueError: unknown locale: UTF-8

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Look forward to your response,
Thanks and regards,
Madhavan