Lua 5.4 has to-be-closed variables that are similar in functions to with blocks in python. Unkike the __gc hook which provides no guarantee as to when it will

Lua 5.4 has to-be-closed variables that are similar in functions to with blocks in python. Unkike the __gc hook which provides no guarantee as to when it will be called, if ever, the __close hook is called when a value goes out of scope. http://www.lua.org/manual/5.4/manual.html#3.3.8 http://www.lua.org/manual/5.4/manual.html#3.3.8