How to check in Python's User-Defined Functions weather a list[ ] passed to it contains only integers?

Question

I'm trying to see if a list contains integers:

def fun(a):
    if a[:] == int:
        print('Sum of elements', sum(a))
        print('Minimum number ', min(a))
        print('Maximum number ', max(a))
        print('Length of elements', len(a))
    else:
        print('Give integers list only')

list = [1,2,3,4,5,'hi']
fun(list) 

Output:

**Output :** *Give integers list only*

Answer 1

You need to check type item by item. Replace if a[:]==int: with

if all(isinstance(n, int) for n in a):
    ...

in your definition.

Answer 2

You can just loop through it and use is_integer() If at any point it fails then return an error

Answer 3

def fun(a):
    for value in a:
        if not isinstance(value, int):
            print('Give integers list only')
            break 
    else:
        print('Sum of elements', sum(a))
        print('Minimum number ', min(a))
        print('Maximum number ', max(a))
        print('Length of elements', len(a))