開始工作了。這是密碼class Mainframe(tk.Frame):

def __init__(self,master,*args,**kwargs):

super(Mainframe,self).__init__(master,*args,**kwargs)

self.meter = Meter(self,height = 400,width = 400)

self.meter.setrange(20,90)

self.meter.pack()

tk.Scale(self, width = 15, from_ = 20, to = 90, orient = tk.HORIZONTAL,

command = self.setmeter).pack()

tk.Button(self,text = 'Quit',width = 15,command = master.destroy).pack()

tk.Button(self,text = 'Zoom',width = 15).pack()

self.setmeter(15)

def setmeter(self,value):

value = int(value)

self.meter.set(value)

class App(tk.Tk):

def __init__(self):

super(App,self).__init__()

self.title('My Meter')

Mainframe(self).pack()

root = App()

serBuffer =b""

aux=""

def readSerial():

serBuffer=b""

while True:

c = ser.read() # attempt to read a character from Serial

#was anything read?

if len(c) == 0:

#print("cero")

break

#else:

#print (len(c))

if c == b'\n' :

#we have all the info

aux = serBuffer.split(b" ")

print (aux[0]," ",aux[1])

miinstance= Mainframe()

miinstance.setmeter(50)

#root.update()

serBuffer = "" # empty the buffer

else:

serBuffer+=c# add to the buffer

#aux= str(serBuffer, 'utf-8')

root.after(700, readSerial) # check serial again soon

root.after(1000, readSerial)

root.mainloop()

順便說(shuō)一句，我知道我正在努力更新儀表。當(dāng)我收到完整的字符串(由檢測(cè)到)時(shí)，我希望將該值傳遞給小部件以更新儀表。設(shè)置值的函數(shù)是setmeter，但是我的代碼

^{pr2}$

我得到這個(gè)錯(cuò)誤。第一行是接收到的串行字符(正確)b'90' b'0'

Exception in Tkinter callback

Traceback (most recent call last):

File "C:\Program Files\Python 3.5\lib\tkinter\__init__.py", line 1535, in __call__

return self.func(*args)

File "C:\Program Files\Python 3.5\lib\tkinter\__init__.py", line 582, in callit

func(*args)

File "C:/Users/MARTIN/Documents/Personal/phyton/Nuevo anemometer/read_serie_v2.py", line 258, in readSerial

miinstance= Mainframe()

TypeError: __init__() missing 1 required positional argument: 'master'

我試圖把“master”作為參數(shù)，但它說(shuō)“master”沒(méi)有定義。在

我的代碼(最初是從網(wǎng)絡(luò)上得到的)在圖形用戶界面中有一個(gè)比例tk.Scale(self,width = 15 ,from_ = 20, to = 90

,orient = tk.HORIZONTAL

,command = self.setmeter).pack()

當(dāng)我移動(dòng)它時(shí)，它會(huì)更新儀表，但我不需要它。儀表應(yīng)該根據(jù)接收到的串行信息進(jìn)行更新。在

你知道怎么回事嗎？在

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