def enfiler(f:list,v):
    f.append(v)

def defiler(f:list):
    return f.pop(0)

def estVide(f:list)->bool:
    return len(f)==0

maFile =[]
enfiler(maFile,1)
enfiler(maFile,2)
enfiler(maFile,3)
print(maFile)
valeur=defiler(maFile)
print("valeur = ",valeur, "maFile =", maFile)