serve.py 文件源码

def serve(cwd, app, port):
    sys.path.insert(0, cwd)

    wsgi_fqn = app.rsplit('.', 1)
    wsgi_fqn_parts = wsgi_fqn[0].rsplit('/', 1)
    if len(wsgi_fqn_parts) == 2:
        sys.path.insert(0, os.path.join(cwd, wsgi_fqn_parts[0]))
    wsgi_module = importlib.import_module(wsgi_fqn_parts[-1])
    wsgi_app = getattr(wsgi_module, wsgi_fqn[1])

    # Attempt to force Flask into debug mode
    try:
        wsgi_app.debug = True
    except:  # noqa: E722
        pass

    os.environ['IS_OFFLINE'] = 'True'

    serving.run_simple(
        'localhost', int(port), wsgi_app,
        use_debugger=True, use_reloader=True, use_evalex=True)