Jan 2022
1 / 7
Jan 2022
Feb 2022
iniesta_78
Jan '22

Hello. At the beginning I will add that I am a beginner. I am doing a simple task of finding min and max values ​​from a set of numbers given by a user. I have trouble converting from input to int because it keeps crashing - "invalid literal for int () with base 10: …"
Below my code

lista=input()
lista=int(lista)
min=lista[0]
max=lista[0]
for i in lista:
if min>i:
min=i
if max<i:
max=i
print(min)
print(max)

I don’t know what I’m doing wrong with this conversion that I keep getting an error?

simes
Jan '22

I think the problem is you’re trying to convert the whole list to an integer, rather than each element of the list.

Try something like this:

lista=input().split()
lista=[int(x) for x in lista]

(I’m no expert in Python, so there may be better ways of doing this.)

iniesta_78
Jan '22

Thanks, it works. But there is also a problem that it only works when I enter numbers separated by a space into the list, and when I enter numbers separated by a comma, an error still pops up. How to make it count well after inserting numbers separated by a comma?

iniesta_78
Jan '22

To be precise, I know that you can choose a separator in the split method, but I do not know how to protect yourself against different separators that the user can enter, such as space, comma?

simes
Jan '22

You could give the user instructions.

Or read the numbers one at a time.

Or before splitting, you could replace any possible separators with your chosen one, then split on that. But beware of consecutive separators with nothing in between, such as a comma and a space between the numbers.

etc etc.

14 days later
mkartistik
Feb '22

Try something like this:

lista=input().split(",")

##the comma here acts as a delimiter and will split the list when you submit numbers separated by a comma between them.
But be careful if you have a space after the comma, you’ll need to mention it in the quotes.
Notice the space inside the quotes
For Example: ", "

Alternatively you may use: lista=[int(x) for x in lista.split(",")]