tensorflowをインストールしたときに引っかかったこと 

#参考にしたもの たすかりました:)
1: https://www.lifewithpython.com/2016/09/python-ValueError-unknown-locale-UTF-8.html
2: pythonによるスクレイピング＆機械学習

2の勉強でやっと機械学習のパートに入ったけど、tensorflowのインストールがうまくいかなかった。

```
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/site-packages/tensorflow/__init__.py", line 24, in <module>
    from tensorflow.python import *
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/site-packages/tensorflow/python/__init__.py", line 77, in <module>
    from tensorflow.python.estimator import estimator_lib as estimator
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/site-packages/tensorflow/python/estimator/estimator_lib.py", line 24, in <module>
    from tensorflow.python.estimator.inputs import inputs
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/site-packages/tensorflow/python/estimator/inputs/inputs.py", line 22, in <module>
    from tensorflow.python.estimator.inputs.numpy_io import numpy_input_fn
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/site-packages/tensorflow/python/estimator/inputs/numpy_io.py", line 22, in <module>
    from tensorflow.python.estimator.inputs.queues import feeding_functions
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/site-packages/tensorflow/python/estimator/inputs/queues/feeding_functions.py", line 38, in <module>
    import pandas as pd
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/site-packages/pandas/__init__.py", line 39, in <module>
    from pandas.core.api import *
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/site-packages/pandas/core/api.py", line 10, in <module>
    from pandas.core.groupby import Grouper
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/site-packages/pandas/core/groupby.py", line 18, in <module>
    from pandas.core.frame import DataFrame
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/site-packages/pandas/core/frame.py", line 39, in <module>
    from pandas.core.series import Series
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/site-packages/pandas/core/series.py", line 2944, in <module>
    import pandas.tools.plotting as _gfx  # noqa
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/site-packages/pandas/tools/plotting.py", line 27, in <module>
    import pandas.tseries.converter as conv
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/site-packages/pandas/tseries/converter.py", line 7, in <module>
    import matplotlib.units as units
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/site-packages/matplotlib/__init__.py", line 1131, in <module>
    rcParams = rc_params()
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/site-packages/matplotlib/__init__.py", line 975, in rc_params
    return rc_params_from_file(fname, fail_on_error)
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/site-packages/matplotlib/__init__.py", line 1100, in rc_params_from_file
    config_from_file = _rc_params_in_file(fname, fail_on_error)
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/site-packages/matplotlib/__init__.py", line 1018, in _rc_params_in_file
    with _open_file_or_url(fname) as fd:
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/contextlib.py", line 59, in __enter__
    return next(self.gen)
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/site-packages/matplotlib/__init__.py", line 1000, in _open_file_or_url
    encoding = locale.getdefaultlocale()[1]
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/locale.py", line 558, in getdefaultlocale
    return _parse_localename(localename)
  File "/Users/DEN/pyenv/versions/anaconda3-4.1.1/lib/python3.5/locale.py", line 486, in _parse_localename
    raise ValueError('unknown locale: %s' % localename)
ValueError: unknown locale: UTF-8
```

難しくないエラーなんだろうけど
```ValueError: unknown locale: UTF-8```
文字コード?環境変数?の問題だったみたい。

参考サイトより以下のコマンドを打つことで解消された。
```export LC_ALL=ja_JP.UTF-8```

以上。