[Tkinter] Progressbar value update issue

[Roshan]

Hi

i have one list .

I want to update Progressbar from list elements.

# this code works
self.prograssBar1["value"] = 12

#but this code does not works,
#updating value from list
self.prograssBar1["value"] = int(spData[1:2])

how to solve this issue ?

[deanhystad]

What is progressBar1? What is spData?

My guess is progresBar1 is a tkinter.Progressbar and that spData is a list of floats?. To set the progress bar value equal to the number in spData[1], use:

self.prograssBar1["value"] = int(spData[1])

Next time include more surrounding code to provide context or give a more detailed explanation.

[Roshan]

progressbar is widget provided by tkinter.

spData[1:2] is element of list.

[deanhystad]

spData[1:2] is a list containing spData[1]. spData[1:3] is a list containing spData[1] and spData[2]. I guess my question should have been "what is spData[1]? What do you have sored in your list?

[Roshan]

my list

['#', '336', '908', '120', '863', '789', '3', '\n']

but when i tried to print list like this, i got error

print(spData[2]) #print 2nd element of list
print(spData[3]) #print 3rd element of list

error is
IndexError: list index out of range


here is my actual code
i am receiving data from serial port.
received data is comma separated value followed by "\n"

myData = self.arduinoSerialData.readline()
        serData = myData.decode('ascii')
        # serData = myData.decode("utf-8")
        print(serData)
        if len(serData) > 1:
            spData = serData.split(',')
            print(spData)
            print(spData[2]) # this line generate error

[deanhystad]

Your list is not ['#', '336', '908', '120', '863', '789', '3', '\n']. If it were, spData[2] would be '120'.

Maybe spData is a list of lists?

Please supply the code that creates spData.

[Roshan]

myData = self.arduinoSerialData.readline()
        serData = myData.decode('ascii')
        # serData = myData.decode("utf-8")
        print(serData)
        if len(serData) > 1:
            spData = serData.split(',')
            print(spData)
            print(spData[2]) # this line generate error

[deanhystad]

What do you see printed when you call "print(spData)"