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Numération
>>> 0b1001
9
convertie les nombres binaires en nombres décimales
>>> 0x5d
93
permet de convertir les bases hexadécimal en base décimale
>>> bin(11)
'0b1011'
permet de convertir les bases décimales en bases binaires
>>> int('0b1011',2)+1
12
permet de calculer un nombre en base binaire et de donner le résultat en base 10
>>> hex(195)
'0xc3'
permet de convertir un nombre décimal en nombre hexadécimal
>>> 0.1+0.2
0.30000000000000004
permet de calculer approximativement des nombres décimaux
>>> 0.1+0.2==0.3
False
permet de comparer des nombres décimaux pour phyton c’est différent
from math import*
importation
>>> isclose(7.000000001,7)
True
la fn isclose renvoie vrai si les 2 nombres st proches
>>> abs(0.1+0.2-0.3)<=10**-9
true
compare la VA a 10 puissance – 9
>>> round(1.235649,3)
arrondi a 3 chiffres apres la ,
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