Python for windows (Python2) パッケージのインストール

C:\Windows\System32>C:\usr\Python27\Scripts\pip install Pygments
Collecting Pygments
  Downloading Pygments-2.1.3-py2.py3-none-any.whl (755kB)
    100% |################################| 757kB 432kB/s
Installing collected packages: Pygments
Successfully installed Pygments-2.1.3
You are using pip version 8.1.1, however version 8.1.2 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.