from quixote.http_response import HTTPResponse
HTTPResponse.DEFAULT_CHARSET = 'UTF-8'
or
import quixote
quixote.DEFAULT_CHARSET = 'UTF-8'
from quixote.http_response import HTTPResponse
HTTPResponse.DEFAULT_CHARSET = 'UTF-8'
or
import quixote
quixote.DEFAULT_CHARSET = 'UTF-8'