Python Forum

Hi, I am doing a basic exercise in python were I have to call the function with a string as the value for the argument mystring and will return the length of that string. If an integer is passed as an input, the function should output a message like "Sorry, integers don't have length".

Here is my code:

def string_length(mystring):
    string = len(mystring)
    return string

mystring = input("Enter a String: ")

if (mystring) == int:
    print("Sorry, integers don't have length!")
    
else:
    print(string_length(mystring))

Here is one output when inputting a string:

Output:
Enter a String: hello
5

Here is another output when inputting an integer:

Output:
Enter a String: 100
3

Second output should be expecting to print "Sorry, integers don't have length!"

Hope you can help me with my concern.

Thank you.

Several things:

- input() always returns string
- even if you have integer, this comparison doesn't work as you expect:

>>> 3 == int
False

- your function doesn't output message as required in description

Thank you for the response.

The string method isdigit should do the trick here

>>> 'string'.isdigit()
False
>>> '12321'.isdigit()
True