将 for 循环与瓶子一起使用

Question

I am currently developing a python web-app based on bottle so what I am trying to do is print the outcome of a for loop I have tried the following

#!/usr/bin/python
from bottle import *
@route('/')
def index():
    for i in range(10):
         return i

but this did not work and i got this from the development server output

localhost - - [13/Jan/2017 18:11:38] "GET /request HTTP/1.1" 200 0
localhost - - [13/Jan/2017 18:11:40] "GET /favicon.ico HTTP/1.1" 200 0

so i tried this

#!/usr/bin/python
from bottle import *
@route('/')
def index():
    sumOfValues=0
    for i in range(10):
        sumOfValues+=i
    return sumOfValues

this also did not work and my devlopment server gave me this

localhost - - [13/Jan/2017 18:15:44] "GET /request HTTP/1.1" 500 746
localhost - - [13/Jan/2017 18:15:46] "GET /favicon.ico HTTP/1.1" 500 750

so how can I do it I tried searching google but nothing came back , thanks in advance

Answer 1

If you return in a function, it immediately ends.

It looks like you want to do a streaming response of-sorts. Bottle can do this, but you must yield items .

See also:

• Streaming Connection Using Python Bottle, Multiprocessing, and gevent

Answer 2

函数必须返回字符串 - 所以使用return str(sumOfValues)