Gnome Shell中带有通知的Python程序不起作用
作者:互联网
我正在编写一个python程序,它从网页获取信息并在Gnome Shell中的Notification上显示.我正在使用Arch,所以我想在启动时启动这个程序,如果网页上有任何变化,它会通知我.这是我的代码:
import time
import webbrowser
import requests
from bs4 import BeautifulSoup
from gi.repository import Notify, GLib
IPS = {'Mobifone': True, 'Viettel': False, 'Vinaphone': False}
LINK = "https://id.vtc.vn/tin-tuc/chuyen-muc-49/tin-khuyen-mai.html"
def set_ips_state(ips_name, state):
global IPS
for key in IPS.iterkeys():
if key == ips_name:
IPS[key] = state
def call_webbrowser(notification, action_name, link):
webbrowser.get('firefox').open_new_tab(link)
def create_notify(summary, body, link):
Notify.init("Offer")
noti = Notify.Notification.new(summary, body, 'dialog-information')
noti.add_action('action_click', 'Read more...', call_webbrowser, link)
noti.show()
# GLib.MainLoop().run()
def save_to_file(path_to_file, string):
file = open(path_to_file, 'w')
file.write(string)
file.close()
def main():
global IPS
global LINK
result = []
offer_news = open('offer_news.txt')
tag_in_file = BeautifulSoup(offer_news.readline(), 'html.parser')
tag = tag_in_file.a
offer_news.close()
page = requests.get(LINK)
soup = BeautifulSoup(page.text, 'html.parser')
for div in soup.find_all('div', 'tt_dong1'):
# first_a = div.a
# main_content = first_a.find_next_subling('a')
main_content = div.find_all('a')[1]
for k, v in IPS.iteritems():
if v:
if main_content.text.find(k) != -1:
result.append(main_content)
print result[1].encode('utf-8')
if tag_in_file == '':
pass
else:
try:
old_news_index = result.index(tag)
print old_news_index
for idx in range(old_news_index):
create_notify('Offer News', result[idx].text.encode('utf-8'), result[idx].get('href'))
print "I'm here"
except ValueError:
pass
offer_news = open('offer_news.txt', 'w')
offer_news.write(result[0].__str__())
offer_news.close()
if __name__ == '__main__':
while 1:
main()
time.sleep(10)
问题是,当我点击通知中的“阅读更多…”按钮时,它不会打开Firefox,除非我在create_notify函数中取消注释GLib.MainLoop().run(),但这会使程序冻结.有人可以帮忙吗?
解决方法:
GUI应用程序通常使用三个主要组件:小部件,事件循环和回调.启动该应用程序时,您将创建小部件,注册回调并启动事件循环.事件循环是无限循环,它从小部件中查找事件(例如“单击按钮”)并触发相应的回调.
现在,在你的应用程序中你有另一个无限循环,所以这两个不会一起玩.相反,您应该使用GLib.MainLoop().run()来触发事件.您可以使用GLib.timeout_add_seconds来触发周期性事件,例如每10秒钟.
第二个问题是你需要保持对应该调用回调的通知的引用.在noti.show()之后添加GLib.MainLoop().run()时它起作用的原因是对noti的引用仍然存在,但如果您按照我之前的建议进行更改则不起作用.如果您确定始终只有一个通知处于活动状态,则可以保留对最后一个通知的引用.否则你需要一个清单,并定期清除它或其他东西.
以下示例应该为您设置正确的方向:
from gi.repository import GLib, Notify
class App():
def __init__(self):
self.last_notification = None
Notify.init('Test')
self.check()
def check(self):
self.last_notification = Notify.Notification.new('Test')
self.last_notification.add_action('clicked', 'Action',
self.notification_callback, None)
self.last_notification.show()
GLib.timeout_add_seconds(10, self.check)
def notification_callback(self, notification, action_name, data):
print(action_name)
app = App()
GLib.MainLoop().run()
标签:python,linux,pygobject,gnome-shell 来源: https://codeday.me/bug/20191007/1867091.html