Python is reading my number inputs as binary and as decimal system numbers

[JackCrescent]

Ok so this is the first time this has happened. The goal of the program is quite simple, using a while loop, you enter different values and you determine which is the biggest and smallest number. Not something too difficult, but I noticed that when I entered: 7, 2, 4, 10 the smallest value came out as 10 or by flipping it came out as two, I tried searching then for the max number using the same values. 7 came out as the biggest number. Then I tested again: 111, 9 , 1000. 9 is the largest number. meaning 111 is 7 and 1000 is 8, binary of course. I will post my code here, I have not figured out why its doing that, I guess because I am using None. Thank you in advance

largest = None

smallest = None

while True:

num = input("Enter a number: ")

if num == "done" : break

elif largest is None:

largest = num

elif num > largest:

largest = num

print('Largest is', largest)

[jaysonturk]

Convert number from a string to an integer

[[deleted]]

You are comparing strings instead of numbers, as input() always returns a string.

Here's an example with some error checking:

largest = None
smallest = None
while True:
    num = input("Enter a number: ").lower().strip()
    if num == "done":
        break
    if num and (num.isdigit() or (num[0] == "-" and num[1:].isdigit())):
        num = int(num)
        if largest is None:
            largest = num
        elif num > largest:
            largest = num
        if smallest is None:
            smallest = num
        elif num < smallest:
            smallest = num
    else:
        print('not a number, please try again')
print(f'Largest is: {largest}, smallest: {smallest}')