AttributeError 'int' object has no attribute isdigit in ipython in ubuntu

Question

def input_base():
    print('please enter the number')
    base = input("Number : ")
    while not base.isdigit():
       print("It`s not integer")
       base = input("R.Number : ")
    return base 
    ...

This is my code and the error is:

AttributeError : 'int' object has no attribute 'isdigit'

I don't know how I could fix this code. I think, I should install some application, such a python-numpy, inside Ubuntu...
Is that right?

`isdigit` is a string method. Numbers don't have this method. — hpaulj, Jan 18 '17 at 03:03
see http://stackoverflow.com/questions/4960208/python-2-7-getting-user-input-and-manipulating-as-string-without-quotations — Paul Rooney, Jan 18 '17 at 03:06
@hpaulj The question is, of course, why 'input' returns a number, and why 'raw_input' fixes this. — yyny, Jan 18 '17 at 03:06
Isn`t there commend 'isdigit' in ipython?? wow... this cord really works in python3!!! — orde.r, Jan 18 '17 at 05:03

score 0 · Accepted Answer · answered Jan 18 '17 at 04:11

You are using python2 therefore you have two functions input and raw_input. The difference being that input calls eval on the inputted string. This turns it from a string to whatever python would interpret it as when input as a script or at the REPL.

For the input 1 you would get the int value 1.

So the value you now have is an int and not a string. It does not have a method isdigit. If you are sticking with python 2, you should instead use raw_input, which doesnt do the eval and therefore always returns a string, which has an isdigit method.

For python3 input does what raw_input does it py2 and so works correctly here.

AttributeError 'int' object has no attribute isdigit in ipython in ubuntu

1 Answers1