如何修复NameError：未定义名称“ casts”

Question

我已经在强制类型转换函数中定义了强制类型转换，但是它仍然显示NameError。我是python的新手，有人可以帮助我吗？非常感谢：）

class Sxxx:
~
~
   def casts(self):
        self.casts = casts
        if self.casts == self.cast_limit:
        print("xxxxxx")
        pass
skkk=Sxxx()
skkk.casts

Traceback (most recent call last):
File "spell.py", line 41, in <module>
summon.casts()
File "spell.py", line 15, in casts
self.casts = casts
NameError: name 'casts' is not defined

Answer 1

问题在于serialPort.DataReceived +=SerialPortDataReceived; private void SerialPortDataReceived(object sender, SerialDataReceivedEventArgs e) { Console.WriteLine(serialPort.ReadLine()); } 是一个函数，因此必须用方括号调用casts。