JuniorTheoryCommon

What does the program print?

Python

x = 5
y = x
x = x + 1
print(x, y)

6 5

Expecting 6 6, as if y followed x: y = x binds y to the object 5, and x = x + 1 makes only x refer to a new object 6.
Expecting x = x + 1 to change nothing, read as an equation: = is assignment, so Python computes x + 1 and binds x to the result 6.