Exercice corrigé 144 : Programme qui calcule la somme de la diagonal d'un tuple à 2D | Python 

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A = [] for i in range(4): B = [] for j in range(4): x = int(input("Entrer une valour : ")) B.append(x) A.append(tuple(B)) print() A = tuple(A) print("******************************* ") print(A) print("******************************* ") som_d = 0 for i in range(4): for j in range(4): print(A[i][j], end=" ") if i == j: som_d+= A[i][j] print() print() print(f"la somme de diagonal principale est :{som_d}")