Python 2 __getattr__ max recursion depth

Question

for example i use this code:

class A(object):
    def __init__(self):
        self.dict1 = {
            \'A\': 3,
            \'B\': self.A}
    def __getat         


        

Answer 1

The reference to self.dict1 inside your __getattr__ method causes __getattr__ to be called again, and so on, hence the infinite recursion. The only safe way to access attributes of self inside __getattr__ is by using references to self.__dict__. Try

def __getattr__(self, key):
    if key in self.__dict__['dict1']:
        return self.__dict__['dict1'][key]

Note also that the absence of an else clause will mean undefined attributes appear to have the value None.