python set comprehension


```type{ i.data for i in xrange(10) if i % 2 }```
[python dictionary comprehension](https://texonom.com/python-dictionary-comprehension-60a3653adc66413b9e7b0a5a99ca2fa1) 
[python list comprehension](https://texonom.com/python-list-comprehension-c3daae2b9d98448a92ef5173a1c4c67a) 





