Exe 3.3
i=0
for caractere in 'Pzythorzn': # First Example
if caractere == 'z':
i=i+1
print(i)
Exercice 3.6
mot_secret = "bonjour le monde"
chaine_crypter = ""
decalage = 3
c = "a"
print(c, ord(c))
c = "z"
print(c, ord(c))
for c in mot_secret :
@nbsp;chaine_crypter = chaine_crypter +chr(ord(c)+decalage)
print(chaine_crypter)
chaine_decrypter = ""
for c in chaine_crypter :
@nbsp;chaine_decrypter = chaine_decrypter +chr(ord(c)-decalage)
print(chaine_decrypter)