🔒 need help to convert number in base 16 to nummber in decimal pls | Python | Page 1

amber umbra Nov 24, 2025, 3:41 PM

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pls help

cerulean willowBOT Nov 24, 2025, 3:41 PM

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amber umbra pls help

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@amber umbra

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amber umbra Nov 24, 2025, 3:42 PM

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so

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def conversion_base16(x):
assert type(x) is int and x>=0, "x doit être un entier"
resultat = ""
symbole ="0123456789ABCDEF"
while x !=0:
r=x%16
x = x//16
resultat = symbole[r]+ resultat
return resultat

cerulean willowBOT Nov 24, 2025, 3:42 PM

#

Hey @amber umbra!

Please edit your message to use a code block

```py
print('Hello, world!')
```

This will result in the following:

print('Hello, world!')```

amber umbra Nov 24, 2025, 3:42 PM

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i already have this

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print('Hello, world!')

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def conversion_base16(x):
assert type(x) is int and x>=0, "x doit être un entier"
resultat = ""
symbole ="0123456789ABCDEF"
while x !=0:
r=x%16
x = x//16
resultat = symbole[r]+ resultat
return resultat

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i can convert decimal in base 16 but not thie inverse

quaint anchor Nov 24, 2025, 3:51 PM

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You can convert a base 10 int into a string and apply the same method

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You can also use the int class that takes a base attribute

amber umbra Nov 24, 2025, 3:52 PM

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quaint anchor You can also use the `int` class that takes a `base` attribute

yes but my teach doesnt want

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i have to use "foré

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for"

quaint anchor Nov 24, 2025, 3:53 PM

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Alright

quaint anchor Nov 24, 2025, 3:53 PM

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quaint anchor You can convert a base 10 int into a string and apply the same method

Then this

amber umbra Nov 24, 2025, 3:53 PM

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how?

quaint anchor Nov 24, 2025, 3:53 PM

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You can convert anything to a string useing str

amber umbra Nov 24, 2025, 3:54 PM

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yeah i know

quaint anchor Nov 24, 2025, 3:54 PM

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So basically you can revert all operations you do now

amber umbra Nov 24, 2025, 3:54 PM

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for the moment i have this

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def add_hexa(b1,b2):
symbole="0123456789ABCDEF"
if len(b1)>len(b2):
n = len(b1)
else:
n = len(b2)
for i in range(n-1,-1,-1):

quaint anchor Nov 24, 2025, 3:54 PM

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Use 16 instead of 10, 10 instead of 16

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And the symbols for base 10

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Why are you summing them ?

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Weren't we talking about converting from base 16 to base 10 ?

amber umbra Nov 24, 2025, 3:55 PM

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quaint anchor And the symbols for base 10

symbole="0123456789?

amber umbra Nov 24, 2025, 3:55 PM

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quaint anchor Weren't we talking about converting from base 16 to base 10 ?

yes

quaint anchor Nov 24, 2025, 3:56 PM

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Yes

amber umbra Nov 24, 2025, 4:06 PM

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quaint anchor Yes

def conversion_base10(x):
assert type(x) is int and x>=0, "x doit être un entier"
resultat = ""
symbole ="0123456789ABCDEF"
while x !=0:
r=x%10
x = x//10
resultat = symbole[r]+ resultat
return resultat

cerulean willowBOT Nov 24, 2025, 4:06 PM

#

Hey @amber umbra!

Please edit your message to use a code block

```py
print('Hello, world!')
```

This will result in the following:

print('Hello, world!')```

amber umbra Nov 24, 2025, 4:06 PM

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this?

quaint anchor Nov 24, 2025, 4:06 PM

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Well you'll have an error verifying the type of x

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But try it

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That's the best way to tell

amber umbra Nov 24, 2025, 4:06 PM

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yes

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x have an error

quaint anchor Nov 24, 2025, 4:07 PM

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If your input x is in base 16 likely it's a string

amber umbra Nov 24, 2025, 4:07 PM

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so i put "x"?

quaint anchor Nov 24, 2025, 4:07 PM

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No

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You check if x is a str

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Not a int

amber umbra Nov 24, 2025, 4:08 PM

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ok

quaint anchor Nov 24, 2025, 4:08 PM

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But you can't use the division rhing to compute the digits

amber umbra Nov 24, 2025, 4:08 PM

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wait

quaint anchor Nov 24, 2025, 4:08 PM

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Bc you are using a str

amber umbra Nov 24, 2025, 4:08 PM

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mhhh

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wait

quaint anchor Nov 24, 2025, 4:08 PM

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You need to figure out another way

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Based on the value of each letter and it's position, for example

amber umbra Nov 24, 2025, 4:08 PM

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come dm pls

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can i?

quaint anchor Nov 24, 2025, 4:08 PM

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No

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Stay there

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Si tu veux passer en français on peut

amber umbra Nov 24, 2025, 4:09 PM

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ah

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ok

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c mieux

quaint anchor Nov 24, 2025, 4:09 PM

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Ok

amber umbra Nov 24, 2025, 4:10 PM

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mais dcp je dois faire comment?

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j'abadonne ce programme?

quaint anchor Nov 24, 2025, 4:10 PM

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MODS: we will talk french from now as it will be easier. Don't worry about moderation, I'll report if there a re problems

amber umbra Nov 24, 2025, 4:10 PM

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j'ai penseé a utiliser un for i in range

quaint anchor Nov 24, 2025, 4:10 PM

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Non t'es bien parti

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Ah oui

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En gros

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Tu itère sur le string qui represente ton nombre

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Et tu fais attention a la position du chiffre que tu traite et a sa valeur

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!e

x = "AEB3"
for i in range(len(x)):
 print(x)

cerulean willowBOT Nov 24, 2025, 4:12 PM

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quaint anchor !e ```py x = "AEB3" for i in range(len(x)): print(x) ```

:white_check_mark: Your 3.14 eval job has completed with return code 0.

001 | AEB3
002 | AEB3
003 | AEB3
004 | AEB3

amber umbra Nov 24, 2025, 4:12 PM

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ok

quaint anchor Nov 24, 2025, 4:12 PM

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Mince att

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!e

x = "AEB3"
for i in range(len(x)):
 print(x[i])

cerulean willowBOT Nov 24, 2025, 4:12 PM

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quaint anchor !e ```py x = "AEB3" for i in range(len(x)): print(x[i]) ```

:white_check_mark: Your 3.14 eval job has completed with return code 0.

001 | A
002 | E
003 | B
004 | 3

quaint anchor Nov 24, 2025, 4:12 PM

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Tu as l'idée

amber umbra Nov 24, 2025, 4:12 PM

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mhhh

quaint anchor Nov 24, 2025, 4:12 PM

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Tu peut obtenir les symbols comme ca

amber umbra Nov 24, 2025, 4:13 PM

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ouais

quaint anchor Nov 24, 2025, 4:13 PM

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Donc avec la position (que tu obtiens avec i)

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Tu peux obtenir la valeur de chaque symbol

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C'est comme faire
37 = 3*10 + 7

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Sauf que c'est en base 16

amber umbra Nov 24, 2025, 4:13 PM

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mhh

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ok je vais tester

quaint anchor Nov 24, 2025, 4:13 PM

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B7 = B*16 + 7

amber umbra Nov 24, 2025, 4:14 PM

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ahhhhhh

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c mieux comme ça

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donc faudrai aussi chnger la puissance

quaint anchor Nov 24, 2025, 4:15 PM

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chaque symbol représente une valeur multiplié par 16 puissance qlqchose

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Comme en base 10 en fait

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236 c'est 2*10^2 + 3*10^1 + 6

amber umbra Nov 24, 2025, 4:16 PM

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oui je vois

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att

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euh

amber umbra Nov 24, 2025, 4:20 PM

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quaint anchor 236 c'est `2*10^2 + 3*10^1 + 6`

comme je lui dit que F=15

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comment je peux faire?

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avec symbole[...]?

quaint anchor Nov 24, 2025, 4:24 PM

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Je te laisse y reflechir

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Les dictionnaires ca te dit quelque chose ?

amber umbra Nov 24, 2025, 4:24 PM

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j'essaie mais cpas simple

quaint anchor Nov 24, 2025, 4:24 PM

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Tu peux aussi utiliser la position dans une liste

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Par example

amber umbra Nov 24, 2025, 4:25 PM

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j'ai pas encore fait ça en classe

quaint anchor Nov 24, 2025, 4:25 PM

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Tu peux faire un gros bloc de if/elif

amber umbra Nov 24, 2025, 4:25 PM

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le prof veut pas

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que du "for"

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def add_hexa(b1,b2):
symbole="0123456789ABCDEF"
if len(b1)>len(b2):
n = len(b1)
else:
n = len(b2)
for i in range(n-1,-1,-1):
symbole[i] = i
16**i*n[-i]

cerulean willowBOT Nov 24, 2025, 4:26 PM

#

Hey @amber umbra!

Please edit your message to use a code block

```py
print('Hello, world!')
```

This will result in the following:

print('Hello, world!')```

amber umbra Nov 24, 2025, 4:26 PM

#

@quaint anchor

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t'en pense quoi

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print('Hello, world!')

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print('Hello, world!')

def add_hexa(b1,b2):
symbole="0123456789ABCDEF"
if len(b1)>len(b2):
n = len(b1)
else:
n = len(b2)
for i in range(n-1,-1,-1):
symbole[i] = i
16**i*n[-i]

quaint anchor Nov 24, 2025, 4:27 PM

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Je comprends pas pq tu me parle de somme d'hexa mtn ?

amber umbra Nov 24, 2025, 4:27 PM

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ah ouii

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lstb

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c ancien

quaint anchor Nov 24, 2025, 4:27 PM

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Mas plus simple de convertir en base 10, De sommer et de reconvertir en base 16 ?

amber umbra Nov 24, 2025, 4:27 PM

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enft le but c'est d'additionner en base 16

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dcp je convertir en base 10

amber umbra Nov 24, 2025, 4:28 PM

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quaint anchor Mas plus simple de convertir en base 10, De sommer et de reconvertir en base 16...

je dois mettre un nombre en base 16 dans le programme

quaint anchor Nov 24, 2025, 4:29 PM

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Oui bah fait

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Tu ecris la fonction et tu la test

amber umbra Nov 24, 2025, 4:30 PM

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ça marche pas

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raceback (most recent call last):
File "<interactive input>", line 1, in <module>
File "<module1>", line 9, in add_hexa
TypeError: 'str' object does not support item assignment

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@quaint anchor

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while p>len(symbole):
p +=1
len(symbole)=p

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j'ai fait un truc comme ça pour approprier chaque nombre et lettre a son vrai truc

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c bien?

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jsp quoi return

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ah nan c nul

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def add_hexa(b1,b2):
resultat=""
symbole="0123456789ABCDEF"
if len(b1)>len(b2):
n = len(b1)
else:
n = len(b2)
for i in range(0,n,-1):
symbole[i]==i
resultat=16**i*n[-i]+resultat
return resultat

cerulean willowBOT Nov 24, 2025, 4:48 PM

#

Hey @amber umbra!

Please edit your message to use a code block

```py
print('Hello, world!')
```

This will result in the following:

print('Hello, world!')```

amber umbra Nov 24, 2025, 4:48 PM

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qu'est ce qui marche pas?

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HELPPPPPPPPPPPPPP

quaint anchor Nov 24, 2025, 4:53 PM

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Prends le temps de réfléchir à ce que tu veux faire

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Tu veux assigner A à 10, B à 12 etc

quaint anchor Nov 24, 2025, 4:54 PM

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amber umbra while p>len(symbole): p +=1 len(symbole)=p

Je comprends même pas ce que tu veux faire

amber umbra Nov 24, 2025, 4:54 PM

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ouais c nul

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def add_hexa(b1,b2):
resultat=""
symbole="0123456789ABCDEF"
if len(b1)>len(b2):
n = len(b1)
else:
n = len(b2)
for i in range(0,n,-1):
symbole[i]==i
resultat=16**i*n[-i]+resultat
return resultat

cerulean willowBOT Nov 24, 2025, 4:55 PM

#

Hey @amber umbra!

Please edit your message to use a code block

```py
print('Hello, world!')
```

This will result in the following:

print('Hello, world!')```

amber umbra Nov 24, 2025, 4:55 PM

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j'ai fais ça mais ça marche pas

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ça ma saouler

quaint anchor Nov 24, 2025, 5:06 PM

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Fais une pause

cerulean willowBOT Nov 24, 2025, 6:06 PM

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#🔒 need help to convert number in base 16 to nummber in decimal pls