What do we've seen so far Assignment Statements Global frame X=1 X 3 X =XX+X Def Statements Global frame function def square(x): square(x)】 square return xx square Call Expressions X 4 square(4) Frame Return 16 valueWhat do we've seen so far Assignment Statements x = 1 x = x + x + x Def Statements def square(x): return x * x Call Expressions square(4) Frame