Slice indices must be integers or None or have _index_ method

Question

I am trying to work on slice operator in the jupyter notebook but I am getting an error:

File "C:\Users\adescamp\Skycraper\skycraper.py", line 20, in <module>

    item = plateau[debut:fin]

TypeError: slice indices must be integers or None or have an _index_ method

I am getting error in the line item = plateau[debut:fin]

from math import sqrt

plateau = [2, 3, 1, 4, 1, 4, 2, 3, 4, 1, 3, 2, 3, 2, 4, 1]

taille = sqrt(len(plateau))

# Division en lignes

L = []

i = 1

while i < taille:

    fin = i * taille

    debut = fin - taille

    item = plateau[debut:fin]

    L.append(item)

    i += 1

Answer 1

If you observe the variables debut and fin they are float, not an integer. Since taille is float. You need to change the variables into an integer.

item = plateau[int(debut):int(fin)]

Or you can change taille into an integer.

taille = int(sqrt(len(plateau)))

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