According to this comment : https://stackoverflow.com/a/42777910/14517936 https://stackoverflow.com/a/42777910/14517936 sys.maxsize is the maximal number of di

According to this comment : https://stackoverflow.com/a/42777910/14517936 https://stackoverflow.com/a/42777910/14517936 sys.maxsize is the maximal number of digits a _long_ in python may have. the `10*sys.maxsize` was just an example to show that, even in Python, long objects have a limit (although very big : 10*9223372036854775807 on 64 bits). I honestly didn't wait to see if the interpreter will effectively complain about its size (it takes why too much time). EDIT : According to gvx's comment those limits are not correct (sys.maxsize is not technicaly the max of digits possible, due to a bad interpretation of what Py_Size means on my side)