🔒 need help with exception in while loop

[onyx halo]

no matter how far i search, i can't find an answer to the question : is it possible to have an exception in a while loop ?.

here's an example:
while weight = NameError
float(input("Please enter a valid weight : "))

don't know if that's clear but please help, i really don't understand while loop

[simple whale]

@onyx halo

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[deep otter]

It's possible for a while expression or body to raise an exception

It's not possible to catch an exception with while

[onyx halo]

wait, here's my code:

print("This is a conversion program from pounds(lb) to kilograms(kg) and vice versa")

try:
    weight = float(input("Enter your weight please:"))
except ValueError:
    print("Please enter a valid number, thank you.")
    exit()

unit = input("Please enter the unit ( lb/kg ):").lower()

if unit == "lb":
    result = round(weight / 2.2046, 3)
    print(f"{weight} pounds correspond to {result} kilograms")
elif unit == "kg":
    result = round(weight * 2.2046, 3)
    print(f"{weight} kilograms corresponds to {result} pounds")
else:
    print("Please enter a valid unit.")

i'm trying to find a way so that, instead of just stopping the code, when there's a ValueError, it just restarts. i really don't understand the while loop and can't find a way to do it

[bitter blaze]

While loops repeat until specifiend condition is true. They are unrelated to exceptions. I probably understand what you're trying to do, this is how you would do this:

weight = None  # This is just a placeholder

while weight is None:  # Retry until we get a valid value
    try:
        weight = float(input("Enter your weight please:"))
    except ValueError:
        print("Please enter a valid number, thank you.")

[onyx halo]

thx dude, ur really cool 🙂

[bitter blaze]

No problem, have a good day!

It's !close to close btw

[onyx halo]

thx !

!close

[simple whale]

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