def swap(a, b):
    temp = a   # spara a i temp
    a = b      # kopiera b till a
    b = temp   # kopiera temp till b
    return (a,b)

x = 7
y = 5
tup = swap(x,y)
x=tup[0]
y=tup[1]
print('Swaped: x=',x, ' ' 'y=',y)