你能帮我修复这个程序，这样它就不会显示一个属性错误。我是异步编程的新手，我几乎不知道发生了什么。
代码如下:
"""Example shows the recommended way of how to run Kivy with the Python built
in asyncio event loop as just another async coroutine.
"""
import asyncio
from kivy.app import App
from kivy.lang.builder import Builder
from kivy.uix.widget import Widget
Builder.load_string('''BoxLayout:
orientation: 'vertical'
BoxLayout:
ToggleButton:
id: btn1
group: 'a'
text: 'Sleeping'
allow_no_selection: False
on_state: if self.state == 'down': label.status = self.text
ToggleButton:
id: btn2
group: 'a'
text: 'Swimming'
allow_no_selection: False
on_state: if self.state == 'down': label.status = self.text
ToggleButton:
id: btn3
group: 'a'
text: 'Reading'
allow_no_selection: False
state: 'down'
on_state: if self.state == 'down': label.status = self.text
Label:
id: label
status: 'Reading'
text: 'Beach status is "{}"'.format(self.status)''')
class MainLayout(Widget):
other_task = None
def app_func(self):
"""This will run both methods asynchronously and then block until they
are finished
"""
self.other_task = asyncio.ensure_future(self.waste_time_freely())
async def run_wrapper():
# we don't actually need to set asyncio as the lib because it is
# the default, but it doesn't hurt to be explicit
await self.async_run(async_lib='asyncio')
print('App done')
self.other_task.cancel()
return asyncio.gather(run_wrapper(), self.other_task)
async def waste_time_freely(self):
"""
This method is also run by the asyncio loop and periodically prints
something.
"""
try:
i = 0
while True:
if self.root is not None:
status = self.root.ids.label.status
print('{} on the beach'.format(status))
# get some sleep
if self.root.ids.btn1.state != 'down' and i >= 2:
i = 0
print('Yawn, getting tired. Going to sleep')
self.root.ids.btn1.trigger_action()
i += 1
await asyncio.sleep(2)
except asyncio.CancelledError as e:
print('Wasting time was canceled', e)
finally:
# when canceled, print that it finished
print('Done wasting time')
class AsyncApp(App):
def build(self):
return MainLayout()
if __name__ == '__main__':
loop = asyncio.get_event_loop()
loop.run_until_complete(MainLayout().app_func())
loop.close()
下面是显示的错误
你能帮我修复属性错误，以及我如何摆脱所有弃用警告吗?
谢谢。
以防万一您想要一种达到目的的方法，而不是专门纠正asyncio，我冒昧地用我知道的方式写一些东西:Threading.
当我运行代码时，它没有很好地显示按钮，所以我将顶层改为BoxLayout，并在构建字符串中根据顶层类名'MainLayout'命名顶层
Kivy还提供了一种使用Kivy安排任务的方法。我偶尔在我的应用程序中使用它，但更常见的是使用线程。
"""Example shows the recommended way of how to run Kivy with the Python built
in Threading
"""
import time
import threading
from kivy.app import App
from kivy.lang.builder import Builder
from kivy.uix.boxlayout import BoxLayout
Builder.load_string('''<MainLayout>:
orientation: 'vertical'
BoxLayout:
orientation: 'vertical'
BoxLayout:
orientation: 'vertical'
ToggleButton:
id: btn1
group: 'a'
text: 'Sleeping'
allow_no_selection: False
on_state: if self.state == 'down': label.status = self.text
ToggleButton:
id: btn2
group: 'a'
text: 'Swimming'
allow_no_selection: False
on_press: root.kv_swim(self, my_argument = 'anything')
on_state: if self.state == 'down': label.status = self.text
ToggleButton:
id: btn3
group: 'a'
text: 'Reading'
allow_no_selection: False
state: 'down'
on_press: root.kv_read(self, my_argument = 'anything')
on_state: if self.state == 'down': label.status = self.text
Label:
id: label
status: 'Reading'
text: 'Beach status is "{}"'.format(self.status)''')
class MainLayout(BoxLayout):
other_task = None
started_reading = False
started_swimming = False
def waste_time(self, task: str):
while True:
print(f"the task {task} is {time.time():.1f}")
time.sleep(1.2)
def kv_read(self, my_button, my_argument: str = "default_value"):
print(f"you can send information from the button {my_argument}")
if not self.started_reading:
threading.Thread(target=self.waste_time, args=("read", ), daemon=True).start()
self.started_reading = True
else:
print("don't start again")
def kv_swim(self, my_button, my_argument: str = "default_value"):
print(f"you can send information from the button {my_argument}")
if not self.started_swimming:
threading.Thread(target=self.waste_time, args=("swim", ), daemon=True).start()
self.started_swimming = True
else:
print("don't start again")
class ThreadedApp(App):
def build(self):
return MainLayout()
if __name__ == '__main__':
mine = ThreadedApp()
mine.run()