UnicodeDecodeError: 'utf8' codec can't decode byte 0x97 in position 3

pipでインストール時にUnicodeDecodeError

    C:\> pip install django-pyodbc-azure
Downloading/unpacking django-pyodbc-azure
Cleaning up...
Exception:
Traceback (most recent call last):
  File "C:\Anaconda\lib\site-packages\pip\basecommand.py", line 122, in main
    status = self.run(options, args)
  File "C:\Anaconda\lib\site-packages\pip\commands\install.py", line 278, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
  File "C:\Anaconda\lib\site-packages\pip\req.py", line 1229, in prepare_files
    req_to_install.run_egg_info()
  File "C:\Anaconda\lib\site-packages\pip\req.py", line 292, in run_egg_info
    logger.notify('Running setup.py (path:%s) egg_info for package %s' % (self.setup_py, self.name))
  File "C:\Anaconda\lib\site-packages\pip\req.py", line 265, in setup_py
    import setuptools
  File "c:\anaconda\lib\site-packages\setuptools-3.6-py2.7.egg\setuptools\__init__.py", line 12, in 
    from setuptools.extension import Extension
  File "c:\anaconda\lib\site-packages\setuptools-3.6-py2.7.egg\setuptools\extension.py", line 7, in 
  File "c:\anaconda\lib\site-packages\setuptools-3.6-py2.7.egg\setuptools\dist.py", line 16, in 
  File "c:\anaconda\lib\site-packages\setuptools-3.6-py2.7.egg\setuptools\compat.py", line 19, in 
  File "C:\Anaconda\lib\SimpleHTTPServer.py", line 27, in 
    class SimpleHTTPRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
  File "C:\Anaconda\lib\SimpleHTTPServer.py", line 208, in SimpleHTTPRequestHandler
    mimetypes.init() # try to read system mime.types
  File "C:\Anaconda\lib\mimetypes.py", line 358, in init
    db.read_windows_registry()
  File "C:\Anaconda\lib\mimetypes.py", line 258, in read_windows_registry
    for subkeyname in enum_types(hkcr):
  File "C:\Anaconda\lib\mimetypes.py", line 249, in enum_types
    ctype = ctype.encode(default_encoding) # omit in 3.x!
UnicodeDecodeError: 'utf8' codec can't decode byte 0x97 in position 3: invalid start byte

Storing debug log for failure in C:\Users\shohaya\pip\pip.log

C:\Anaconda\Lib\site-packages下にsitecustomize.pyを作成。

    import sys
    sys.defaultencoding('mbcs')

    http://python.blog-slime.com/2007/08/utf8.html
    http://python.blog-slime.com/2007/10/ppkdppkf.html