m2_1.py

'''1.	Write a program to generate a fancy number for a new vehicle considering the following constraints:'''
'''a.	The fancy number should have 4-digits
#b.	The sum of these 4-digits should be 12.
#c.	The 3rd digit should be equal to the difference between the 1st and the 2nd digit.#
#d.	The 4th digit should be equal to the sum of the 1st and the 3rd digit'''


def sum_digits(num):
    if num<10:
        return num
    s=0
    while num !=0:
        s+= num % 10
        num//=10
    return s

def get_digits(num):
     temp = num
     a,temp = temp//1000 , temp%1000
     b,temp = temp//100 ,temp%100
     c,temp = temp//10,temp%10
     d,temp = temp//1,temp%1
     return a,b,c,d

for i in range(1000,10000):
     if sum_digits(i) == 12:
         a,b,c,d = get_digits(i)
         if a-b == c and a+c == d: 
           print(i)