Nilai array numpy tidak memperbarui

supp = np.array([['A', '5', '0'], ['B', '3', '0'], ['C', '4', '0'], ['D', '1', '0'], ['E', '2', '0']])
supp = supp.astype(object)

for row in supp:
    row[2] = int(row[1]) / 6
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