Re: [Python-Dev] Dict constructor

Second wild idea of the day:

The dict constructor currently accepts sequences where each element has length 2, interpreted as a key-value pair.

Let's have it also accept sequences with elements of length 1, interpreted as a key:None pair.

The benefit is that it provides a way to rapidly construct sets:

The downside is that it's another way to write programs incompatible with 2.2. Thomas