Algorithm to Euler Projects

euler.py

def euler1(arg):
    
    i = 0
    sum = 0
    
    
    while i<1000:
        
        if i%3 == 0 or i%5 == 0:
            sum = sum + i
        
        i = i+1

    
    print sum


def euler3(arg):
    
    i = 2
    n = 600851475143
    primes = []
    
    while n != 1:
        if n % i == 0:
            primes.append(i)
            n /= i
            i = 2
        else:
            i += 1
    
    print  primes

def euler2(arg):
    sum = 0
    x = 1
    y = 2
    
    while x < 4000000:
         if x % 2 == 0:
             sum += x
         
         x, y = y, x+y
    
    print sum

def euler4(arg):
    x = 100
    y = 100
    highest = 0
    while x < 1000:
    
        x += 1
    
        while y < 1000:
            sum = x*y
            if str(sum) == str(sum)[::-1]:   
                if sum > highest:
                    highest = sum                        
            
            y += 1                            
        
        y = 100

        
    print highest 
        
 
if __name__ == '__main__':
    euler5(1)