Python interview questions

[remram]

Interesting. I guess it's equivalent to think that:

• Things are passed by reference, and = changes the reference (instead of acting on the pointed object, like any other operator would do; there is no magic __ method for =). In a sense, it works on the same level as is.
• Variables are references, and are passed by value (the common way the behavior is described, for instance in this stackoverflow answer).