Переход с Pascal на Python

if a > 0 Then
Begin
	b = 20;
End
else
Begin
	b = 3
End

if a < 0:
    b = 50
elif a == 0:
    b = 60
else:
    b = 70

program EXAMPLE1;
var
	X, Y, Summa: Real;
begin
	X := 2;
	Y :=3;
	Summa := X + Y;
end.

x = 2
x = 3
summa = x + y