获取access_token的代码如下：
from app.lib.common_function import *
from app.lib.constant import weibo_api
@app.route(YOUR_REDIRECT_URI)
def page_weibo_login():
code = request.args.get("code")
client = APIClient(app_key=weibo_api.client_id, app_secret=weibo_api.client_secret,
redirect_uri=weibo_api.redirect_uri)
access_token_dict = client.request_access_token(code, weibo_api.redirect_uri)
return redirect("/link.html?access_token="+str(access_token_dict))