how does this code work

Question

class point:
pass

p1 = point()
p1 = point()
p2 = point()
p2 = point()

p1. x = 5
p1.x = 4
p2.y = 3
p2.y = 2

print(p1.x, p2.y)
print(p2.y, p1.x)

Answer 1

Python is a dynamic language so you can modify things on the fly. You start off with a new class point with no implementation.

You allocate p1 as a variable and give it an instance of point. Then, toss that instance to put a new one in it's place. Followed by, doing the same thing with p2.

You modify p1 to add an x property and set it to 5 before replacing it with 4. Similarly, p2 gets a y property with 3 followed by 2.

Finally, you print the new properties.