midichords

recievedData = [] # List to keep track of the latest keys that has been pressed.


mididata = [[[144, 43, 100, 0], 13132],
            [[144, 36, 100, 0], 13152],
            [[144, 40, 100, 0], 13152]
           ]


for event in mididata:
# Above this line is just to emulate the mididata you are getting in. Only the recievedData = [] is needed in your code.
# The line below this corelates to your line number 55 (data = event[0])


    data = event[0]
    note = data[1]
    time = event[1]


    # if theres is no data in recievedData, add the current note and timestamp
    if len(recievedData) == 0:
        recievedData.append([time,note])

    # else if there is less than 10 notes in the list add the current note IF the
    # timestamp does not differ "too much"
    elif len(recievedData) < 10:

        # check if the timestamp of this note is not later than 100ms after the previous.
        if not time > recievedData[-1][0] + 100: # [-1] = the last element, [0] = time of the last element.
            recievedData.append([time,note])
        else:
            # to much time has past, empty the recievedData list
            recievedData = []

    # if theres is more than 10 notes in the list its probably time to empty the list.
    else:
       recievedData = []


    print(recievedData)
    ################
    # Check the recievedData list to see if we can find any chords.

    if len(recievedData) > 2: #needs at least three notes to make a chord.

        templist = [] # a temporary list just to cointain the notes, and not timestamps.

        for data in recievedData:
            templist.append(data[1])

        templist.sort() # Make sure the keys are presented in ascending order.


        if templist[0] == 36 and templist[1] == 40 and templist[2] == 43:
            print("C major")