How do I combine functions in python?

Question

I am writing a python code that should convert str to int and find the sum of the inputs. Here's the code:

def convert_add():
    strings=[]
    n=int(input('Enter the list size: '))
    for i in range(0,n):
        print('Enter a string:',i)
        item=(input())
        if item==str:
            strings.append(len(item))
            print(sum(strings))
        else:
            strings.append(int(item))
            print(sum(strings))
convert_add()

So here's the thing, when I run this code it sums up the length of the strings I input, but I also want it to sum up integers. Since its a len function inputting a number(int) does the same thing it does to a string, it counts the figures, but I want an output of lets say 10 and 20 to be 30 and not 4. I have tried using the if statement and it's not working, i.e if item==str use the len fn else it sums. I am still a beginner and would love to know if there is a way I can combine them. Thanks.

You are telling it to append the length of the string. Instead, append the string as a number: strings.append(len(item)) --> strings.append(int(item)) — 001
– 001, Commented Sep 13, 2022 at 19:50
I have tweaked the code a little bit by including the if statements that I was using to try and make the idea I have in my head work. However, only one of the statements is working. Is there a way it can be both, is the 'if item==str' wrong? — the_Schmaltz
– the_Schmaltz, Commented Sep 13, 2022 at 20:22
In this case, item will never be equal to str, as str is a builtin type. What are you trying to accomplish here? The return type from the input function is always of type str. Do a bit of research in detecting if a string contains only digits, or alpha characters. (I believe that’s what you’re trying to accomplish here(?)) — s3dev
– s3dev, Commented Sep 13, 2022 at 20:29
I am trying to get an output from the sum of length of strings that I append or the sum of integers that I append. I'll do a little more digging. Thanks :-) — the_Schmaltz
– the_Schmaltz, Commented Sep 13, 2022 at 20:43

Benzion.R · Accepted Answer · 2022-09-13 20:31:40Z

1

You can combine.
Note that for input combined at the same time, for example 'str' and 10,
you will get an aggregate value of 13.

def convert_add():
    strings = []
    n = int(input('Enter the list size: '))
    for i in range(n):
        item = input(f'Enter a string {i + 1}: ')
        try:
            strings.append(int(item))
        except ValueError:
            # That's not an int
            strings.append(len(item))
        print(sum(strings))

convert_add()

answered Sep 13, 2022 at 20:31

Benzion.R

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1 Comment

the_Schmaltz Over a year ago

Wow, this is even better than I'd hoped. Thanks alot :-)

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