4 ms·

Regarding Python3 sample at the end, What if the method y is mutating the object? Then when I just check for existence of y with hasattr, it will mutate the ob

• icebraining 11y ago
  The reality is that almost any interaction with an object can cause it to mutate itself, since Python allows classes to override just about any operator. For example: "a > 3", "5 in a", "x = a.b", "len(a)", "print a", etc - all of these can cause a to mutate. In the end, you have to trust the code to do the Right Thing, or just not use it.