what is missing in my while statement ?

[BPMGUP]

Hello friends, I'm new here.
I am still a beginner but I am quite familiar with loops and while statement and have used it many times.

I'm trying a simple exercise but the result only shows when the number I type exists in the list, otherwise I get an error which I don't understand :

list = [1,3,4,6,7]
number = int(input("Pick a number : "))
i=0
while list[i] != number :
    if i < len(list) :
        i = i+1
    else :
        print("your numeber has not been found")
print(f"the position of your number is {i}")

Could you please help me understand which part of my while statement is not correct ?

Thank you

Larz60+ write Nov-28-2021, 03:10 AM:
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[Larz60+]

You can use the 'in' clause:

list = [1,3,4,6,7]

number = int(input("Pick a number : "))
if number in list:
    print(f"Number is in list at index: {list.index(number)}")
else:
    print("your numeber has not been found")

[deanhystad]

Your program crashes because you use list[i] before testing if i is in range.

[buran]

Post the full traceback you get.
As a side note - don't use list as name.