Hello,
 A function that returns True for an integer number (int or integer float) can be defined as follows. 
def is_integer_num(n):
    if isinstance(n, int):
        return True
    else:
        return False
print(is_integer_num(100))      //you can use for loop here and check the number
# True
print(is_integer_num(1.23))
# False
The built-in function isinstance(object, type) can be used to determine whether an object is of a particular type.\
Hope it helps!!
Thank you!!