WSGI serve static issue

wsgi_hack.py

elif environ['PATH_INFO'].find('/static') != -1:
        #ctype = environ['HTTP_ACCEPT'].split(',')[0]
        protoctype=environ['PATH_INFO'].split('.')[-1]
        if protoctype =='css':
            ctype='text/css'
            response_body = open('wsgi'+environ['PATH_INFO'],encoding='utf-8').read().encode('utf-8')
        elif protoctype =='js':
            ctype='text/javascript'
            response_body = open('wsgi'+environ['PATH_INFO'],encoding='utf-8').read().encode('utf-8')
        elif protoctype =='ico':
            ctype='image/x-icon'
            response_body = open('wsgi'+environ['PATH_INFO'],'rb').read()
        elif protoctype =='woff2' or protoctype =='woff':
            ctype='application/x-font-woff'
            response_body = open(environ['PATH_INFO'][1:],'rb').read()
        elif protoctype =='ttf':
            ctype='application/x-font-TrueType'
            response_body = open(environ['PATH_INFO'][1:],'rb').read()
        else:
            ctype='text/plain'
            response_body = open(environ['PATH_INFO'][1:],'rb').read()