Starting Project 2 "Game of Life". I tried running the template and got an error that "Windows" name is undefined. Looked at graphics.py and it appears that there is only a Graphwin class. Changed statement in template file and now get a window to open, but hangs up because it does not find a canvasFrame class. Is there something else that needs to be imported?
Thanks, Sigurd aka kj1k

Question

Starting Project 2 "Game of Life".   I tried running the template and got an error that "Windows" name is undefined.   Looked at graphics.py and it appears that there is only a Graphwin class.  Changed statement in template file and now get a window to open, but hangs up because it does not find a canvasFrame class.   Is there something else that needs to be imported?
Thanks,  Sigurd aka kj1k

anonymous · Answer

I just started as well. I haven't made any changes to template yet, but I didn't get the error you described.  It created a blank window and then got a Python error looking for an __init__ method which I had not yet supplied.

anonymous · Answer

There is a Window class defined at line 836 in graphics.py right after the definition of the GraphWin class.  I put some print statements into game_of_life.py right aftet the "Initialize Board" comment to make sure that the class was being created.  It was.  It sailed right through with no problem.  I don't know why its not working for you.

anonymous · Answer

I am using graphics.py version 4.2.5, dated 5/26/2011.  Are you using the same version?   I don't see a Window class defined at all.

Thanks,   Sigurd aka kj1k

anonymous · Answer

I used the graphics.py and documentation linked to from the course page ( http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-189-a-gentle-introduction-to-programming-using-python-january-iap-2011/assignments/ ) The highest version number listed update history comments is Version 3.5 5/10/09.

anonymous · Answer

Thank you very much. Not sure how/why I got a later incompatible version of the library.   Looks like it solved my immediate problem.   Still have work to do, but this one is solved.

anonymous · Answer

You are very welcome.  Just got the simulate step to work (I think).  Was confusing in that I forgot that a "for" loop on a dictionary returns the keys, not the item from the dictionary whose value is obtained with the key.  I thought I had a "block" when in fact I had a tuple. I wasn't sure what "toad" was supposed to do.  The simulate changed the grid and I had to work it out by hand to be sure it was correct.

anonymous · Answer

I'm thinking that the pulsar block list may be incorrect or incomplete.  It went through 8 changes and then became a fixed pattern.  It didn't look like the picture from the Conway Wiki.