ysnerdem

print('you can terminate the operation by entering 0')

while True:
    number = int(input('Enter a number:'))

    if number > 1:
        for i in range(2, number):
            if number % i == 0:
                print(number, 'is not a prime number')
                break

ysnerdem

def sqrt(number):
    return int(number ** 0.5)

def prime_number(number):
    for i in range(2, sqrt(number)):
        if number % i == 0:
            print(number, 'is not a prime number')
            break
    else:
        print(number, 'is a prime number')

ysnerdem

def sum_of_multipliers(number):
    sum_of_multipliers = 0
    for i in range (1,number):
        if number % i == 0:
            sum_of_multipliers += i
    return sum_of_multipliers

for i in range(1,10000):
    if i == sum_of_multipliers(i):
        print(i)

ysnerdem

def fibonacci(num):
    if num <= 1:
        return 1
    else:
        return fibonacci(num-1) + fibonacci(num-2)

num = int(input('How many?:'))

if num <= 0:
    print('Enter a positive number.')

ysnerdem

numbers = [-2, 5, 16, 21, -21, 1]

def Find_max(list):
    if len(list) == 1:
        return list[0]
    else:
        max = Find_max(list[1:])
        return max if max > list[0] else list[0]

ysnerdem

s = "asdfaksjdşfıoqnfxcvçmaldmfgjdghfgqyewb"

letter_count = {}

for i in s:
    if i in letter_count:
        letter_count[i] += 1
    else:
        letter_count[i] = 1

ysnerdem

def mukemmel_sayi(sayi):
    lst = [i for i in range(1, sayi) if sayi % i == 0]
    sum = 0

    for i in lst:
        sum += i
        if sum == sayi:
            print(sayi)

for i in range(1, 1001):

ysnerdem

def sqr(num):
    if (type(num) != int):
        raise ValueError("Geçerli bir sayı girmediniz.")
    else:
        return num**2

try:
    print(sqr(2))
    print(sqr("a"))
except ValueError:

ysnerdem

def even_number(num):
    if num % 2 != 0:
        raise ValueError("this number is not even number.")
    else:
        return num

lst = [3,4,5,6,7,8,9,16]

for i in lst:
    try:

ysnerdem

lst = ["345","sadas","324a","14","kemal"]

for i in lst:
    try:
        i = int(i)
        print(i)
    except:
        pass