从过程向标签输出文本

Question

谢谢你们到目前为止的帮助！还有一个问题解决了就可以收尾了。

我找不到办法把文本输出到标签上，如果可以的话，我还想在那个标签里显示一个链接，让用户可以打开网页。

我试着定义新的程序来实现这个功能，但在构建时虽然可以指定文本，之后我却无法更改它！我总是收到“变量未定义”的错误，显然我在错误的地方操作了！

import kivy
from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.label import Label
from kivy.uix.spinner import Spinner
from bs4 import BeautifulSoup
from urllib import request
import sys, traceback
from functools import partial
import re
from kivy.base import runTouchApp
from kivy.lang import Builder
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.textinput import TextInput
from kivy.uix.image import Image


class DSFRSapp(App):
    def build(self):
        self.root = FloatLayout()
        i = Image(source='DSFRSLogo.png',
                  allow_stretch=True,
                  pos_hint = ({'center_x':0.5, 'y': .25}))
        spinner = Spinner(text='Select a Station',
                             values=('Appledore','Axminster','Bampton','Barnstaple','Bere Alston','Bideford','Bovey Tracey','Braunton','Bridgwater','Brixham','Buckfastleigh','Budleigh Salterton','Burnham on sea','Camels Head','Castle Cary','Chagford','Chard','Cheddar','Chulmleigh','Colyton','Combe Martin','Crediton','Crewkerne','Crownhill','Cullompton','Dartmouth','Dawlish','Exeter Danes Castle','Exeter Middlemoor','Exmouth','Frome','Glastonbury','Greenbank','Hartland','Hatherleigh','Holsworthy','Honiton','Ilfracombe','Ilminster','Ivybridge','Kingsbridge','Kingston','Lundy Island','Lynton','Martock','Minehead','Modbury','Moretonhampstead','Nether Stowey','Newton Abbot','North Tawton','Okehampton','Ottery St Mary','Paignton','Plympton','Plymstock','Porlock','Princetown','Salcombe','Seaton','Shepton Mallet','Sidmouth','Somerton','South Molton','Street','Taunton','Tavistock','Teignmouth','Tiverton','Topsham','Torquay','Torrington','Totnes','USAR','Wellington','Wells','Williton','Wincanton','Witheridge','Wiveliscombe','Woolacombe','Yelverton','Yeovil'),
                            size_hint=(None, None),
                            size=(150, 44),
                            pos_hint = ({'center_x':0.5, 'y': 0.35}))
        L = Label(text="Results will display here",
                      size_hint=(None, None),
                      pos_hint =({'center_x':0.5, 'y': 0.25}),
                      size=(150, 44))
        self.root.add_widget(spinner)
        self.root.add_widget(L)
        self.root.add_widget(i)
        spinner.bind(text=show_selected_value)



def show_selected_value(spinner, text):
    FindIncident(text)


def FindIncident( sStation, *args ):
    webpage = request.urlopen("http://www.dsfire.gov.uk/News/Newsdesk/IncidentsPast7days.cfm?siteCategoryId=3&T1ID=26&T2ID=35")#main page
    soup = BeautifulSoup(webpage)
    incidents = soup.find(id="CollapsiblePanel1") #gets todays incidents panel
    Links = [] #create list call Links

    for line in incidents.find_all('a'): #get all hyperlinks
        Links.append("http://www.dsfire.gov.uk/News/Newsdesk/"+line.get('href')) #loads links into Links list while making them full links
    n = 0
    e = len(Links)
    if e == n: #if no links available no need to continue
    #output message to label
       print("nothing found please try again later")
       sys.exit(0)
    sFound = False
    while n < e: #loop through links to find station
        if sFound: #if the station has been found stop looking
             sys.exit(0)
        webpage = request.urlopen(Links[n]) #opens link in list)
        soup = BeautifulSoup(webpage) #loads webpage
        if soup.find_all('p', text=re.compile(r'{}'.format(sStation))) == []:#check if returned value is found
        #do nothing leaving blank gave error
            a = "1" #this is pointless but stops the error
        else:
            print(soup.find_all('p', text=re.compile(r'{}'.format(sStation))))
            WebLink = Links[n]
            sFound = True # to avoid un needed goes through the loop process
        n=n+1 # moves counter to next in list
    if not sFound: #after looping process if nothing has been found output nothing found
        print("nothing found please try again later ")
    #output to label
    return;



if __name__ =="__main__":
    DSFRSapp().run()

我还得提一下，我有一个会显示的logo，我会在屏幕调整大小时更好地放置这些小部件。我想把背景颜色设为白色，可能加上一个细细的红色边框（就是想让它看起来更好看一些）。

如果你能回答这些问题中的任何一个，那就太好了！不过目前最重要的是把网页搜索的结果输出到标签上，而不是打印到控制台，最好还能带上链接（WebLink）。

再次感谢，一旦我解决了这些问题，我打算把这个程序交给我的消防服务部门，让消防员的伴侣们能大致了解消防员什么时候可能结束工作。不过这得等我能把它打包成安卓应用，也许还要找其他人把它移植到iOS，因为我没有Mac电脑。

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从过程向标签输出文本

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