[Tutor] a question about maxint

eryksun eryksun at gmail.com
Tue Oct 2 19:53:25 CEST 2012

On Tue, Oct 2, 2012 at 12:55 PM, Katya Stolpovskaya
<katerina.sto at gmail.com> wrote:
> I have this error:
>>>> from sys import *
>>>> maxint
> Traceback (most recent call last):
> File "<pyshell#4>", line 1, in <module>
> maxint
> NameError: name 'maxint' is not defined
> What does it mean and how to deal with it?

The "int" type in Python 3 is actually a "long", so there is no maxint.

The machine limit that's still relevant in CPython is sys.maxsize
(it's also in Python 2), which should be the maximum value of an
ssize_t (signed size_t) on your platform. For example, this limits the
maximum length of a list. It has to be signed because negative values
are used in some cases to indicate errors. For example, list.sort()
sets the "allocated" size to -1 in order to detect if the list has
been mutated during the sort:


Further reading:

Using ssize_t as the index type


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