from distutils.command.bdist import show_formats
from distutils.spawn import spawn
from email.errors import NoBoundaryInMultipartDefect
import re
from unicodedata import decimal
from xml.dom import NoModificationAllowedErr
class Conversion:
def __init__(self):
pass
def c2to10(self,number2,show=False):
"""
Conversion binaire vers decimale
"""
lgnumber2 = len(number2)
number10 = 0
showtxt = ""
showtxt2 = ""
for i in range(lgnumber2):
number10 += int(number2[i])*2**(lgnumber2-i-1)
if showtxt != "":
showtxt += " + "
showtxt2 += " + "
showtxt += number2[i]+"*2^"+str(lgnumber2-i-1)
showtxt2 += number2[i]+"*"+str(2**(lgnumber2-i-1))
if show:
print(showtxt)
print(showtxt2)
print(number10)
def c10to2(self,number10,show=False):
"""
Conversion decimale vers binaire
"""
number2=""
espace = ""
showtxt = ""
while number10>0:
if espace == "":
showtxt = str(number10)+"|"+"\033[4m 2\033[0m"
if show :
print(showtxt)
espace = self.__add_spaces(len(str(number10))-1)
else:
if number10 > 1 :
showtxt += " " +str(number10)+"|"+"\033[4m 2\033[0m"
else:
showtxt += " " +str(number10)
espace += self.__add_spaces(len(str(number10))+2)
if show :
print(showtxt)
bit = number10 % 2
number2 = str(bit) + number2
number10 = number10 // 2
showtxt = espace + str(bit)+"|"
espace = self.__add_spaces(len(espace)-3)
if show :
print(espace,"<--")
print(number2)
def __add_spaces(self,number):
spaces = ""
for _ in range(number):
spaces += " "
return spaces
def c10to2on8b(self,number,show=True):
print(self.convertentier(number,2**7,show))
def c10to2on16b(self,number):
print(self.convertentier(number,2**15,show))
def convertentier(self,nombre,p2,show):
maxnombre = len(str(nombre))
maxp2 = len(str(p2))
str_convert=""
while p2>=1:
if nombre >= p2:
#print(p2,"*",1)
calcul = nombre - p2
if show:
self.affichage(str(nombre),str(p2),"1",str(calcul),maxnombre,maxp2)
str_convert += "1"
nombre -= p2
else :
#print(p2,"*",0)
if show:
self.affichage("",str(p2),"0","",maxnombre,maxp2)
str_convert += "0"
p2 = p2//2
return str_convert
def c_rel_10_to_2(self,number,show=True):
p2 = 2**7
while number<-p2 or number>(p2-1) :
p2 = p2 * 2**8
if number >= 0 :
signe = "0"
resultat = self.convertentier(number,p2,show)
print(resultat)
else :
signe = "1"
print("negatif")
resultat = self.convertentier(-number,p2,show)
print(resultat)
inversion = ""
for c in resultat :
if c == "0":
inversion += "1"
else :
inversion += "0"
print(inversion)
relatif2 = signe + self.__add1__(inversion)
print(relatif2)
def __add1__(self,number2):
posi = len(number2)-1
retenue = 1
relatif2 = ""
while posi>=0 :
if number2[posi] == "0" and retenue == 1 :
relatif2 = "1" + relatif2
retenue = 0
elif number2[posi] == "1" and retenue == 1 :
relatif2 = "0" + relatif2
retenue = 1
else :
relatif2 = number2[posi] + relatif2
posi -= 1
return relatif2[1:]
def c_decimal_2(self,number,show=False):
c2 = self.convertvirgule(number,20,show)
print("0."+c2)
def convertvirgule(self,nombre,nbbits,show):
maxp2 = len(str(round(2**(-nbbits),nbbits)))
maxnombre = maxp2
str_convert=""
p2 = 0.5
while nbbits>0:
if nombre >= p2:
calcul = nombre - p2
calcul = round(calcul,10)
if show:
self.affichage(str(round(nombre,10)),str(p2),"1",str(calcul),maxnombre,maxp2)
str_convert += "1"
nombre -= p2
if nombre == 0:
return str_convert
else :
if show:
self.affichage("",str(p2),"0","",maxnombre,maxp2)
str_convert += "0"
p2 = p2/2
nbbits-=1
return str_convert
def affichage(self,nombre1,p21,bit,calcul,maxnombre,maxp2):
nbesp1 = maxnombre - len(nombre1)
esp1 = ""
nbesp2 = maxp2 - len(p21)
esp2 = ""
for _ in range(nbesp1):
esp1 += " "
for _ in range(nbesp2):
esp2 += " "
if nombre1 == "":
texte = esp1 + nombre1 +" " +esp2+ p21+"*"+bit
else :
texte = esp1 + nombre1 +" - " +esp2+ p21+"*"+bit + " = " +calcul
print(texte)
from bitstring import BitArray
b = "01001111"
x = BitArray(bin=b).int
print(x)
f1 = BitArray(float=10.625, length=32).hex
f2 = BitArray('float:64=5.4e31').bin
print(f1)
print(f2)
conv = Conversion()
conv.c2to10("101")
conv.c10to2(14)
conv.c10to2on8b(14)
conv.c_decimal_2(0.625)
conv.c_rel_10_to_2(127)
conv.c_rel_10_to_2(-128)
conv.c_rel_10_to_2(-1)
Python : class conversion
- Écrit par : Richard GAUTHIER
- Affichages : 417