[Tutor] Fwd: circular movement in pygame

[diliup gabadamudalige]

Thanks all for the responses.
Charles Cossé -  yes I can write a simple pygame program that makes a
sprite move in a circle but it may not be the style and order that many may
approve or accept. I consider myself a student. :)
No one has pointed out why the object moves in a circle properly in the bit
of code where it is addressed directly and why it does not when the same
code is applied thru a class.
I know that an object can be made to move around the circumference of a
circle by constantly calculating the point and giving the x and y values

1. x = some code

That is what I used and it worked. I was trying to find how we can do the
same thing by updating the current position by doing

2. x += some code
 Above 1 works. 2 does not. Why is that?

Both the same code. The same variable is used with different names cause
some others were confused when they were the same.

 I hope this time I have answered correctly. No more attachments. (e mail
or otherwise. :) )