1import os 2 3 4def application(env, start_response): 5 body = '' 6 vars = env.get('HTTP_X_VARIABLES').split(',') 7 8 for var in vars: 9 if var in os.environ: 10 body += str(os.environ[var]) + ',' 11 12 body = body.encode() 13 start_response('200', [('Content-Length', str(len(body)))]) 14 return body 15