Does the integer implementation matter?

[ichabod801]

Some integers are stored in a table, so two variables assigned to integers might have the same address, or they might have different addresses. This comes up periodically on these forums, most recently here.

I don't care why this happens.

My question is: does it matter? I think I have been programming Python for 17 years now, and never have the details of the integer implementation mattered to any of my programs. Has it ever mattered to any of your code? Can someone post a code snippet where it did matter?