Are nested try/except blocks in python a good programming practice?

Question

I\'m writing my own container, which needs to give access to a dictionary inside by attribute calls. The typical use of the container would be like this:

dic         


        

Answer 1

While in Java its indeed a bad practice to use Exceptions for flow control (mainly because exceptions force the jvm to gather resources (more here)), in Python you have 2 important principles: Duck Typing and EAFP. This basically means that you are encouraged to try using an object the way you think it would work, and handle when things are not like that.

In summary the only problem would be your code getting too much indented. If you feel like it, try to simplify some of the nestings like lqc suggested in the suggested answer above.