我正在制作一个带有背景图像和两个相当简单的按钮，一个打开按钮以及另一个称为扫描的程序。当用户按下“打开”按钮时，将出现“浏览文件”对话框（tkinter），使用户可以选择要打开的文档。如果他还按下“扫描”按钮，则程序将开始扫描特定的单词。否则，将按原样打开文件。
问题是我在用户界面（.kv文件）中使用了kivy，并且无法正确调用方法。如果他们确实能够远程运行，则屏幕的其余部分（尤其是背景）将因此受到影响。
这是.py和.kv文件的代码：-
class Scorpa(App):
def open_file(self,file):
self.curr_path= os.getcwd()
file=filedialog.askopenfilename
(initialdir=os.path.dirname(curr_path),
initialfile=os.path.basename(curr_path),
filetypes=[("Word files", "*.docx *.doc")])
if self.file != None:
if self.fopen.open_file == True:
scan(file)
else:
os.startfile(file)
if __name__ == '__main__':
Scorpa().run()
BoxLayout:
orientation: 'vertical'
padding: 20
spacing: 20
canvas:
Rectangle:
size: self.size
pos: self.pos
source: 'ScorpaTest2.png'
Button:
id: fopen
size: 200, 30
pos: 0, 0
color: .0, .0, .0, 1.
font_size: 25
text: 'Open'
bold: True
size_hint: 1, 1
on_press: app.open_file()
Button:
id: scan
size: 200, 30
pos: 0, 0
color: .0, .0, .0, 1.
font_size: 25
text: 'Scan'
bold: True
on_press: root.read()
Label:
size: 70, 30
pos: 30, 0
text: 'What\'s Next?'
color: .0, .0, .0, 1.
font_size: 25
bold: True
这是我按下“打开”按钮时遇到的错误之一：-
Traceback (most recent call last):
File "ScorpaApp.py", line 113, in <module>
Scorpa().run()
File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\app.py", line 855, in run
runTouchApp()
File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\base.py", line 504, in runTouchApp
EventLoop.window.mainloop()
File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\core\window\window_sdl2.py", line 747, in mainloop
self._mainloop()
File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\core\window\window_sdl2.py", line 479, in _mainloop
EventLoop.idle()
File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\base.py", line 342, in idle
self.dispatch_input()
File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\base.py", line 327, in dispatch_input
post_dispatch_input(*pop(0))
File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\base.py", line 233, in post_dispatch_input
listener.dispatch('on_motion', etype, me)
File "kivy\_event.pyx", line 707, in kivy._event.EventDispatcher.dispatch
File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\core\window\__init__.py", line 1402, in on_motion
self.dispatch('on_touch_down', me)
File "kivy\_event.pyx", line 707, in kivy._event.EventDispatcher.dispatch
File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\core\window\__init__.py", line 1418, in on_touch_down
if w.dispatch('on_touch_down', touch):
File "kivy\_event.pyx", line 707, in kivy._event.EventDispatcher.dispatch
File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\uix\widget.py", line 549, in on_touch_down
if child.dispatch('on_touch_down', touch):
File "kivy\_event.pyx", line 707, in kivy._event.EventDispatcher.dispatch
File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\uix\behaviors\button.py", line 151, in on_touch_down
self.dispatch('on_press')
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 1098, in kivy._event.EventObservers._dispatch
File "C:\Users\Laptop\AppData\Local\Programs\Python\Python36-32\lib\site-packages\kivy\lang\builder.py", line 64, in custom_callback
exec(__kvlang__.co_value, idmap)
File "C:\Python Programs\scorpa.kv", line 35, in <module>
on_press: app.open_file()
TypeError: open_file() missing 1 required positional argument: 'file'