_13_swap.py

a=6
b=4
print(a,b)

a,b=b,a
print(a,b)

c=7
d= 9
print(c,d)

c=c+d
d=c-d
c=c-d
print(c,d)

e=11
f=14
print(e,f)
# x-or
e=e^f
f=e^f
e=e^f
print(e,f)