Flask视图返回错误“View函数没有返回响应” [英] Flask view return error "View function did not return a response"

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本文介绍了Flask视图返回错误“View函数没有返回响应”的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我有一个视图,调用一个函数来获取响应。但是,它给出错误查看函数没有返回响应。如何解决这个问题?

  from flask import Flask 
app = Flask(__ name__)

def hello_world():
return'test'

@ app.route('/ hello',methods = ['GET','POST'])
def hello():
hello_world()
$ b $ if if __name__ =='__main__':
app.run(debug = True)



当我尝试通过添加一个静态值而不是调用该函数来测试它时,它就起作用了。

  @ app.route('/ hello',methods = ['GET','POST'])
def hello():
returntest


解决方案

以下不返回响应: p>

  @ app.route('/ hello',methods = ['GET','POST'])
def hello ():
hello_world()

你的意思是说...


$ b $

  @ app.route('/ hello',methods = ['GET','POST'])
def hello() :
返回hello_ world()

请注意 return 在这个固定的功能。


I have a view that calls a function to get the response. However, it gives the error View function did not return a response. How do I fix this?

from flask import Flask
app = Flask(__name__)

def hello_world():
    return 'test'

@app.route('/hello', methods=['GET', 'POST'])
def hello():
    hello_world()

if __name__ == '__main__':
    app.run(debug=True)

When I try to test it by adding a static value rather than calling the function, it works.

@app.route('/hello', methods=['GET', 'POST'])
def hello():
    return "test"

解决方案

The following does not return a response:

@app.route('/hello', methods=['GET', 'POST'])
def hello():
    hello_world()

You mean to say...

@app.route('/hello', methods=['GET', 'POST'])
def hello():
    return hello_world()

Note the addition of return in this fixed function.

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