[FIXED] missing 1 required positional argument for a function

Issue

I am using Spyder IDE and call the following function in the Ipython shell after defining the input. But, I get the positional argument error! Perhaps something with the argument, but still I couldnt settle. can you help plz! Here is the code:

def get_confusion_matrix(label, ref_label, mask):
    label = sitk.GetArrayFromImage(label)
    ref_label = sitk.GetArrayFromImage(ref_label)
    mask = sitk.GetArrayFromImage(mask)

    ref_label[(mask == 2) & (label > 0)] = label[(mask == 2) & (label > 0)]
    ref_label[(mask == 1) & (label == 0)] = 0
    return get_confusion_matrix(label.flatten(), ref_label.flatten())

def get_dices(label, ref_label, mask):
    cm = get_confusion_matrix(label, ref_label, mask)
    dice_st = 2*cm[1,1]/(np.sum(cm[:,1]) + np.sum(cm[1,:]))
    dice_sv = 2*cm[2,2]/(np.sum(cm[:,2]) + np.sum(cm[2,:]))
    return dice_st, dice_sv

TypeError: get_confusion_matrix() missing 1 required positional argument: 'mask'

Solution

You have defined get_confusion_matrix as taking 3 arguments: label, ref_label, and mask. The error is because you are only passing two arguments to it when you call it with get_confusion_matrix(label.flatten(), ref_label.flatten()).

Answered By - Kemp