python - Apache fail to load django secret key from environment -

i have moved secret key settings.py /etc/environment

/etc/environment

secret_key='tne@n#^^%pp2h3mnwy2=94vuc!d99h=ww69tttf2n#_ypcjk)h'

in project's settings.py

secret_key=os.environ['secret_key']

this error in apache error_log file

keyerror: 'secret_key', referer: http://anime.moxware.com/

how can solve issue?

Alconcel