ex3.py

def is_perfect(number):
    if type(number)==float:
        print("Warning, {0} is a float. The function will consider it to be {1} instead.".format(number,int(number+0.5)))
        number = int(number+0.5)
    elif type(number) != int:
        print("Error, cannot understand the user input : {0}".format(number))
        return False


    sum_div = 0
    for div in range(1,number+1):
        if number%div == 0:
            sum_div += div
    return sum_div == 2*number


test_cases = [1,1.0, 1.49 , 1.51, "arboretum", 2,3,4,5,6,7,8,9,10,28,496]

for test in test_cases:
    print("Trying {0} : {1}".format(test,is_perfect(test)))