✅ Corrigé

1) def perimetre_rectangle(L,l): return 2*(L+l)

2) def est_pair(n): return n%2==0

3) def maximum(a,b,c): return max(a,max(b,c))

4)

def puissance(a,n):
    r=1
    for i in range(n): r*=a
    return r
print(puissance(2,3))  # 8