how to swap two numbers without variable in python code example

Example 1: python swap numbers

x, y = 10, 20
print(x, y) 	# 10 20
x, y = y, x 
print(x, y) 	# 20 10

Example 2: python swap two variables

a = 2
b = 4
print (a) # 2
print (b) # 4
# Now swap them
# Hold one variable in c temporarily:
c = b
b = a
a = c
# Now delete variable c from memory:
del c

print (a) # 4
print (b) # 2