Checkpoint 2.11.1.
x = 6
x = x + 1
x = x + 1
x = x + 1
x
appears on both sides does not matter. The semantics of the assignment statement makes sure that there is no confusion as to the result. The visualizer makes this very clear.
x
was initialized to 6.
at_1_1.html
http://www.diveintopython3.net/
x = 12
x = x - 1
print(x)
x = 12
x = x - 3
x = x + 5
x = x + 1
print(x)