如何在Flask中寫入文本到響應中

Question

我在我的應用程序中有一個端點，當它打到時我想向客戶端發送一個響應。我在燒瓶裏這樣做。

from flask import Response 
def heartbeat(): 
response = Response() 
response.headers['Last-Modified'] = datetime.now() 
response.headers['Cache-Control'] = 'no-store, no-cache, must-revalidate, post-check=0, pre-check=0, max-age=0' 
response.headers['Expires'] = '-1' 
return response(heartbeat) 

這是拋出那叫一個錯誤有三個參數。我在這裏錯過了什麼？

Answer 1

from flask import Response, Flask 

app = Flask(__name__) 

@app.route("/") 
def heartbeat(): 
    response = Response() 
    response.headers['Last-Modified'] = datetime.now() 
    response.headers['Cache-Control'] = 'no-store, no-cache, must-revalidate, post-check=0, pre-check=0, max-age=0' 
    response.headers['Expires'] = '-1' 
    return response 

然後訪問「localhost：5000 /」就可以了。