python方法调用-PHP中文网问答

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python方法调用

学习ing 2017-06-12 09:23:06

1016

部分代码:

#打开串口 ser=serial.Serial('COM3', 9600) #开启一个线程 th=threading.Thread(target=thread_read, args=(ser, msg_parsed)) th.start() def thread_read(ser, callback=None): buf=b' ' while running.is_set(): buf=read_data(ser, buf,callback=None) def read_data(ser, buf, callback=None): if callback is None: callback=print buf += ser.read(ser.inwaiting())

为啥在read_data()这个方法里调用inwaiting(),报错，告诉我has no attribute 'inwaiting()',在方法外面写ser.inwaiting()正常，我不是已经把serial对象的引用传入方法中了吗？书大神解答！

学习ing

全部回复 (2)

Peter_Zhu2017-06-12 09:25:06 2 楼

你别传对象，用全局变量试试

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大家讲道理2017-06-12 09:25:06 1 楼

print(dir(ser))打印ser的所有方法,找到inWaiting和in_waiting，没有inwaiting，所以报错。
你确定在外面调用的是inwaiting吗？

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