[英]TypeError: method()takes in 1 positional argument but 2 were given (Python and Kivy)
[英]TypeError: Function takes 1 positional argument but 2 were given kivy python
我試圖在自我之后添加實例,但仍然無法正常工作
這是錯誤信息
File "kivy\_event.pyx", line 703, in kivy._event.EventDispatcher.dispatch
File "kivy\_event.pyx", line 1214, in kivy._event.EventObservers.dispatch
File "kivy\_event.pyx", line 1138, in kivy._event.EventObservers._dispatch
TypeError: sss() takes 1 positional argument but 2 were given
這是完整的 kivy python 代碼
import kivy
from kivy.uix.widget import Widget
from kivy.properties import ObjectProperty
from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.gridlayout import GridLayout
from kivy.uix.textinput import TextInput
from kivy.uix.button import Button
from kivy.uix.screenmanager import ScreenManager, Screen
class Touch(Widget):
def __init__(self, **kwargs):
super(Touch, self).__init__(**kwargs)
self.cols = 1
self.Rc1 = Button(text="Submit", font_size=40)
self.Rc1.bind(on_press=self.sss)
self.add_widget(self.Rc1)
def sss(self):
self.Rc1 = Button(text="Push Me !",
font_size="20sp",
background_color=[1, 0, 0, 1],
color=(1, 1, 1, 1),
size=(32, 32),
size_hint=(.2, .2),
pos=(300, 250))
class MyApp(App):
def build(self):
return Touch()
if __name__ == "__main__":
MyApp().run()
當您單擊按鈕時,它會使用一些信息執行您的功能。 在不同的 GUI 中,它可以使用不同的信息。 在某些 GUI 中,它可以是有關事件的信息,在其他 GUI 中,它可以是有關小部件的信息等。
Kivy
發送有關單擊的小部件的信息,您必須接收它
def sss(self, widget):
如果您想更改現有Button
則不要創建新按鈕 - 如果您將其分配給相同的變量,它不會更改現有按鈕。 您必須刪除舊按鈕並使用add_widget()
添加新按鈕
您在self.Rc1
有現有按鈕,因此您可以執行
def sss(self, widget):
self.Rc1.text = "Push Me !"
self.Rc1.font_size = "20sp"
self.Rc1.background_color = [1, 0, 0, 1]
self.Rc1.color = (1, 1, 1, 1)
self.Rc1.size = (32, 32)
self.Rc1.size_hint = (.2, .2)
self.Rc1.pos = (300, 250)
但更有趣的是,您還可以在sss(self, widget):
獲得此小部件,並且您可以這樣做
def change_button(self, widget):
widget.text = "Push Me !"
widget.font_size = "20sp"
widget.background_color = [1, 0, 0, 1]
widget.color = (1, 1, 1, 1)
widget.size = (32, 32)
widget.size_hint = (.2, .2)
widget.pos = (300, 250)
這樣你就可以用不同的按鈕使用相同的功能
import kivy
from kivy.uix.widget import Widget
from kivy.app import App
from kivy.uix.button import Button
class Touch(Widget):
def __init__(self, **kwargs):
super(Touch, self).__init__(**kwargs)
#self.all_buttons = []
for row in range(10):
for col in range(10):
x = col * 100
y = row * 100
button = Button(text=f"{row},{col}", pos = (x, y))
button.bind(on_press=self.change_button)
self.add_widget(button)
#self.all_buttons.append(button)
def change_button(self, widget):
if widget.background_color == [1,1,1,1]:
widget.background_color = [1, 0, 0, 1]
else:
widget.background_color = [1, 1, 1, 1]
class MyApp(App):
def build(self):
return Touch()
if __name__ == "__main__":
MyApp().run()
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