Keys in environ

PATH
HOME
TERM
USER
PYTHONDONTWRITEBYTECODE
PYTHONHOME
AUTH_TYPE
CONTENT_LENGTH
CONTENT_TYPE
CSP_NONCE
DOCUMENT_ROOT
GATEWAY_INTERFACE
GATEWAY_EOF
GATEWAY_EOT
GATEWAY_ESC
GATEWAY_MRS
HTTP_ACCEPT
HTTP_USER_AGENT
HTTP_ACCEPT_ENCODING
HTTP_HOST
PATH_INFO
PATH_ODS
PATH_TRANSLATED
QUERY_STRING
REMOTE_ADDR
REMOTE_HOST
REMOTE_PORT
REMOTE_USER
REQUEST_METHOD
REQUEST_PROTOCOL
REQUEST_SCHEME
REQUEST_TIME_GMT
REQUEST_TIME_LOCAL
REQUEST_URI
SCRIPT_FILENAME
SCRIPT_NAME
SCRIPT_RTE
SERVER_ADDR
SERVER_CHARSET
SERVER_GMT
SERVER_NAME
SERVER_PROTOCOL
SERVER_PORT
SERVER_SIGNATURE
SERVER_SOFTWARE
UNIQUE_ID
wsgi.version
wsgi.url_scheme
wsgi.input
wsgi.errors
wsgi.multithread
wsgi.multiprocess
wsgi.run_once