wsgi_extract.py

# standard wsgi middleware
def some_wsgi_middleware(app):
    def middleware(environ, start_response)
    
        def custom_start_response(status, headers, exc_info):
            # they get overwritten here from func args
            custom_start_response._status = status
            custom_start_response._headers = headers
        custom_start_response._status = custom_start_response._headers = None
    
        response = app(environ, custom_start_response)
        
        if custom_start_response._status == '404':
            start_response('200', [])
            return 'something something'
        else:
            start_response(custom_start_response._status, custom_start_response._headers)
            return response
    return middleware