Problem Set 5, Problem 1 - Tracing List Comprehensions

1-1

 y     |      lc
 -----------------------
       |     
       |
       
       
       
       
       
1-2
global variables

  x  |  y
-------------
     |     
     |
       

local variables (ones that belong to mystery)

  x  |  y  | lc
------------------
     |     |     
     |     |
     
     

output (the lines printed by the program)
4 2