Bases de Python

Variables et types

x = 42         # int
pi = 3.14      # float
nom = "Alice"  # str
ok = True      # bool

Conditions

if x > 10:
    print("grand")
elif x > 0:
    print("moyen")
else:
    print("petit ou négatif")

Boucles

for i in range(5):
    print(i)

while x > 0:
    x -= 1

Fonctions

def carre(n):
    return n * n

print(carre(5))  # 25

Listes

L = [1, 2, 3]
L.append(4)       # [1,2,3,4]
L[0]              # 1
len(L)            # 4
for x in L: print(x)