Python 使用Kivy调用pygame操纵杆数据采集

好的，我一直在尝试调用一个函数，该函数使用pygame.goodge从2个Logitech 3d extreme pro操纵杆获取输入。当我严格使用pygame时，操纵杆被识别并工作。但是当我试图在kv语言中调用类似的函数时，我得到了这个错误

   File "MainUI__1-2.py", line 179, in <module>
     MainClass().run()
   File "/home/mlees/kivy_venv/lib/python3.6/site-packages/kivy/app.py", line 829, in run
     root = self.build()
   File "MainUI__1-2.py", line 175, in build
     return tabpanelkv()
   File "/home/mlees/kivy_venv/lib/python3.6/site-packages/kivy/uix/tabbedpanel.py", line 482, in __init__
     super(TabbedPanel, self).__init__(**kwargs)
   File "/home/mlees/kivy_venv/lib/python3.6/site-packages/kivy/uix/gridlayout.py", line 256, in __init__
     super(GridLayout, self).__init__(**kwargs)
   File "/home/mlees/kivy_venv/lib/python3.6/site-packages/kivy/uix/layout.py", line 76, in __init__
     super(Layout, self).__init__(**kwargs)
   File "/home/mlees/kivy_venv/lib/python3.6/site-packages/kivy/uix/widget.py", line 361, in __init__
     rule_children=rule_children)
   File "/home/mlees/kivy_venv/lib/python3.6/site-packages/kivy/uix/widget.py", line 469, in apply_class_lang_rules
     rule_children=rule_children)
   File "/home/mlees/kivy_venv/lib/python3.6/site-packages/kivy/lang/builder.py", line 538, in apply
     rule_children=rule_children)
   File "/home/mlees/kivy_venv/lib/python3.6/site-packages/kivy/lang/builder.py", line 659, in _apply_rule
     child, crule, rootrule, rule_children=rule_children)
   File "/home/mlees/kivy_venv/lib/python3.6/site-packages/kivy/lang/builder.py", line 659, in _apply_rule
     child, crule, rootrule, rule_children=rule_children)
   File "/home/mlees/kivy_venv/lib/python3.6/site-packages/kivy/lang/builder.py", line 654, in _apply_rule
     child = cls(__no_builder=True)
   File "MainUI__1-2.py", line 129, in __init__
     self.Joy1B = pygame.joystick.Joystick(self.joy1A)
 TypeError: an integer is required (got type NoneType)

---

任何帮助都是非常感谢的。

问题是

\uuuu init\uuuu

是在

Kivy

执行

kv

之前执行的

class JoystickValue(GridLayout):

    joy1A = ObjectProperty()
    joy2A = ObjectProperty()
    
    def __init__(self, **kwargs):
        super().__init__(**kwargs)

        #print('self.joy1A:', self.joy1A)
        
        Clock.schedule_once(self.set_joys, 0.1)

    def set_joys(self, arg):

        #print('self.joy1A:', self.joy1A)
        
        self.Joy1B = pygame.joystick.Joystick(self.joy1A)
        self.Joy2B = pygame.joystick.Joystick(self.joy2A)

        # ... rest ...

您可以直接在代码中设置值

class JoystickValue(GridLayout):

    joy1A = ObjectProperty(0)
    joy2A = ObjectProperty(1)

或者您必须使用

scheduler

稍后运行此代码，

Kivy

将有时间执行

kv

class JoystickValue(GridLayout):

    joy1A = ObjectProperty()
    joy2A = ObjectProperty()
    
    def __init__(self, **kwargs):
        super().__init__(**kwargs)

        #print('self.joy1A:', self.joy1A)
        
        Clock.schedule_once(self.set_joys, 0.1)

    def set_joys(self, arg):

        #print('self.joy1A:', self.joy1A)
        
        self.Joy1B = pygame.joystick.Joystick(self.joy1A)
        self.Joy2B = pygame.joystick.Joystick(self.joy2A)

        # ... rest ...

code

print（self.joy1A）

为我提供了

None

-最好直接使用数字

操纵杆（0）

或在Python中定义

self.joy1A=0

或

joy1A=ObjectProperty（defaultvalue=0）

。来自kv的代码可以在之后执行

class JoystickValue(GridLayout):

    joy1A = ObjectProperty()
    joy2A = ObjectProperty()
    
    def __init__(self, **kwargs):
        super().__init__(**kwargs)

        #print('self.joy1A:', self.joy1A)
        
        Clock.schedule_once(self.set_joys, 0.1)

    def set_joys(self, arg):

        #print('self.joy1A:', self.joy1A)
        
        self.Joy1B = pygame.joystick.Joystick(self.joy1A)
        self.Joy2B = pygame.joystick.Joystick(self.joy2A)

        # ... rest ...