環境変数の取得

環境変数はos.environから参照できる

>>> import os
>>> for env in os.environ:
...     print env
... 
VERSIONER_PYTHON_PREFER_32_BIT
TERM_PROGRAM_VERSION
LOGNAME
USER
PATH
HOME
TERM_PROGRAM
LANG
TERM
SHELL
VERSIONER_PYTHON_VERSION
SHLVL
TMPDIR
TERM_SESSION_ID
SSH_AUTH_SOCK
Apple_PubSub_Socket_Render
_
OLDPWD
__CF_USER_TEXT_ENCODING
Apple_Ubiquity_Message
PWD
COMMAND_MODE
>>> print os.environ.get("LANG")
ja_JP.UTF-8