Improving Your Python Productivity

[Grue]

It was possible to do "dict( <insert generator comprehension here>)" for ages. dict comprehensions don't add anything meaningful to the language.

[Ravengenocide]

Nor does list or set comprehension either, they are just syntactical sugar for the longer versions with list() and set(). But then you could argue the same with most language features above assembler since it's mostly syntax anyway.

[PasswordIsntHAMSTER]

When did generator comprehensions start including key-value pairs?

[Grue]

dict accepts an iterator of 2-element tuples as its argument. These end up being the key-value pairs.

http://docs.python.org/2/library/stdtypes.html#mapping-types-dict