note the difference between the loaded code(string) and the source code

load_code.lua

local function main()
  i = 32
  local i = 0 
  f = load(" i = i + 1; print(i)")
  g = function () i = i + 1; print(i) end
  f()
  g()
end

main()

-- output 
-- 33
-- 1