Hi Justin, > What's the difference between "==" and "is" (or, more to the point: > where is this discussed)?
This is a Python thing as "==" is equality testing and "is" is memory address testing. For example, sage: a = 2 sage: b = 2 sage: a == b True sage: id(a) 54737440 sage: id(b) 54735856 sage: a is b False In Python, None, True, and False are all unique so you should use "is" with them since it is just a pointer check. --Mike --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
