not everyone will always be running the latest version of software and you want to ensure that the code you write works with as many computers as possible you can' always make your python code backwards compatible with python but if it' possible then you should do it otherwisewhen people with python try to run your games will get error messages and think that your program is buggy list of some differences between python and python can be found at the getrandomvelocity(function def getrandomvelocity() speed random randint(squirrelminspeedsquirrelmaxspeed if random randint( = return speed else return -speed the getrandomvelocity(function is used to randomly determine how fast an enemy squirrel will move the range of this velocity is set in the squirrelminspeed and squirrelmaxspeed constantsbut on top of thatthe speed is either negative (indicating the squirrel goes to the left or upor positive (indicating the squirrel goes to the right or downthere is fifty-fifty chance for the random speed to be positive or negative finding place to add new squirrels and grass def getrandomoffcamerapos(cameraxcamerayobjwidthobjheight) create rect of the camera view camerarect pygame rect(cameraxcameraywinwidthwinheight while true random randint(camerax winwidthcamerax ( winwidth) random randint(cameray winheightcameray ( winheight) create rect object with the random coordinates and use colliderect( to make sure the right edge isn' in the camera view objrect pygame rect(xyobjwidthobjheight if not objrect colliderect(camerarect) return xy when new squirrel or grass object is created in the game worldwe want it to be within the active area (so that it is near the player' squirrelbut not within the view of the camera (so that it doesn' just suddenly pop into existence on the screento do thiswe create rect object that