Deeply convert dictionary to object(s)

struct.py

class Struct:
    def __init__(self, **entries):
        for k, v in entries.items():
            if isinstance(v, dict):
                entries[k] = Struct(**v)
 
        self.__dict__.update(entries)
 
d = {'a':{'b':1, 'c':2}, 'd':1}
 
struct = Struct(**d)
 
print struct.a.b